Chibios_test/stm32_f072_onekey: Add support for reset to bootloader (#4238)

* Add support for reset to bootloader

Chibios_test/STM32_F072_ONEKEY wouldn't reset to bootloader on a
compatible Discovery board because the Chibios library board file was
lacking the __early_init(void) function necessary to read the magic key.
Borrowed code from Clueboard 60, tested working.

* Remove board.chcfg

3 files changed, 1039 insertions, 0 deletions

diff --git a/keyboards/chibios_test/boards/ST_STM32F072B_DISCOVERY/board.c b/keyboards/chibios_test/boards/ST_STM32F072B_DISCOVERY/board.c
new file mode 100644
index 0000000000..7e9f90853e
--- /dev/null
+++ b/keyboards/chibios_test/boards/ST_STM32F072B_DISCOVERY/board.c
@@ -0,0 +1,111 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/*
+ * This file has been automatically generated using ChibiStudio board
+ * generator plugin. Do not edit manually.
+ */
+
+#include "hal.h"
+
+#if HAL_USE_PAL || defined(__DOXYGEN__)
+/**
+ * @brief   PAL setup.
+ * @details Digital I/O ports static configuration as defined in @p board.h.
+ *          This variable is used by the HAL when initializing the PAL driver.
+ */
+const PALConfig pal_default_config = {
+#if STM32_HAS_GPIOA
+  {VAL_GPIOA_MODER, VAL_GPIOA_OTYPER, VAL_GPIOA_OSPEEDR, VAL_GPIOA_PUPDR,
+   VAL_GPIOA_ODR,   VAL_GPIOA_AFRL,   VAL_GPIOA_AFRH},
+#endif
+#if STM32_HAS_GPIOB
+  {VAL_GPIOB_MODER, VAL_GPIOB_OTYPER, VAL_GPIOB_OSPEEDR, VAL_GPIOB_PUPDR,
+   VAL_GPIOB_ODR,   VAL_GPIOB_AFRL,   VAL_GPIOB_AFRH},
+#endif
+#if STM32_HAS_GPIOC
+  {VAL_GPIOC_MODER, VAL_GPIOC_OTYPER, VAL_GPIOC_OSPEEDR, VAL_GPIOC_PUPDR,
+   VAL_GPIOC_ODR,   VAL_GPIOC_AFRL,   VAL_GPIOC_AFRH},
+#endif
+#if STM32_HAS_GPIOD
+  {VAL_GPIOD_MODER, VAL_GPIOD_OTYPER, VAL_GPIOD_OSPEEDR, VAL_GPIOD_PUPDR,
+   VAL_GPIOD_ODR,   VAL_GPIOD_AFRL,   VAL_GPIOD_AFRH},
+#endif
+#if STM32_HAS_GPIOE
+  {VAL_GPIOE_MODER, VAL_GPIOE_OTYPER, VAL_GPIOE_OSPEEDR, VAL_GPIOE_PUPDR,
+   VAL_GPIOE_ODR,   VAL_GPIOE_AFRL,   VAL_GPIOE_AFRH},
+#endif
+#if STM32_HAS_GPIOF
+  {VAL_GPIOF_MODER, VAL_GPIOF_OTYPER, VAL_GPIOF_OSPEEDR, VAL_GPIOF_PUPDR,
+   VAL_GPIOF_ODR,   VAL_GPIOF_AFRL,   VAL_GPIOF_AFRH},
+#endif
+#if STM32_HAS_GPIOG
+  {VAL_GPIOG_MODER, VAL_GPIOG_OTYPER, VAL_GPIOG_OSPEEDR, VAL_GPIOG_PUPDR,
+   VAL_GPIOG_ODR,   VAL_GPIOG_AFRL,   VAL_GPIOG_AFRH},
+#endif
+#if STM32_HAS_GPIOH
+  {VAL_GPIOH_MODER, VAL_GPIOH_OTYPER, VAL_GPIOH_OSPEEDR, VAL_GPIOH_PUPDR,
+   VAL_GPIOH_ODR,   VAL_GPIOH_AFRL,   VAL_GPIOH_AFRH},
+#endif
+#if STM32_HAS_GPIOI
+  {VAL_GPIOI_MODER, VAL_GPIOI_OTYPER, VAL_GPIOI_OSPEEDR, VAL_GPIOI_PUPDR,
+   VAL_GPIOI_ODR,   VAL_GPIOI_AFRL,   VAL_GPIOI_AFRH}
+#endif
+};
+#endif
+
+void enter_bootloader_mode_if_requested(void);
+
+/**
+ * @brief   Early initialization code.
+ * @details This initialization must be performed just after stack setup
+ *          and before any other initialization.
+ */
+void __early_init(void) {
+  enter_bootloader_mode_if_requested();
+  stm32_clock_init();
+}
+
+
+
+#if HAL_USE_MMC_SPI || defined(__DOXYGEN__)
+/**
+ * @brief   MMC_SPI card detection.
+ */
+bool mmc_lld_is_card_inserted(MMCDriver *mmcp) {
+
+  (void)mmcp;
+  /* TODO: Fill the implementation.*/
+  return true;
+}
+
+/**
+ * @brief   MMC_SPI card write protection detection.
+ */
+bool mmc_lld_is_write_protected(MMCDriver *mmcp) {
+
+  (void)mmcp;
+  /* TODO: Fill the implementation.*/
+  return false;
+}
+#endif
+
+/**
+ * @brief   Board-specific initialization code.
+ * @todo    Add your board-specific code, if any.
+ */
+void boardInit(void) {
+}
diff --git a/keyboards/chibios_test/boards/ST_STM32F072B_DISCOVERY/board.h b/keyboards/chibios_test/boards/ST_STM32F072B_DISCOVERY/board.h
new file mode 100644
index 0000000000..173f7b6054
--- /dev/null
+++ b/keyboards/chibios_test/boards/ST_STM32F072B_DISCOVERY/board.h
@@ -0,0 +1,923 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/*
+ * This file has been automatically generated using ChibiStudio board
+ * generator plugin. Do not edit manually.
+ */
+
+#ifndef BOARD_H
+#define BOARD_H
+
+/*
+ * Setup for ST STM32F072B-Discovery board.
+ */
+
+/*
+ * Board identifier.
+ */
+#define BOARD_ST_STM32F072B_DISCOVERY
+#define BOARD_NAME                  "ST STM32F072B-Discovery"
+
+/*
+ * Board oscillators-related settings.
+ * NOTE: LSE not fitted.
+ * NOTE: HSE not fitted.
+ */
+#if !defined(STM32_LSECLK)
+#define STM32_LSECLK                0U
+#endif
+
+#define STM32_LSEDRV                (3U << 3U)
+
+#if !defined(STM32_HSECLK)
+#define STM32_HSECLK                0U
+#endif
+
+#define STM32_HSE_BYPASS
+
+/*
+ * MCU type as defined in the ST header.
+ */
+#define STM32F072xB
+
+/*
+ * IO pins assignments.
+ */
+#define GPIOA_BUTTON                0U
+#define GPIOA_PIN1                  1U
+#define GPIOA_PIN2                  2U
+#define GPIOA_PIN3                  3U
+#define GPIOA_PIN4                  4U
+#define GPIOA_PIN5                  5U
+#define GPIOA_PIN6                  6U
+#define GPIOA_PIN7                  7U
+#define GPIOA_PIN8                  8U
+#define GPIOA_PIN9                  9U
+#define GPIOA_PIN10                 10U
+#define GPIOA_USB_DM                11U
+#define GPIOA_USB_DP                12U
+#define GPIOA_SWDIO                 13U
+#define GPIOA_SWCLK                 14U
+#define GPIOA_PIN15                 15U
+
+#define GPIOB_PIN0                  0U
+#define GPIOB_PIN1                  1U
+#define GPIOB_PIN2                  2U
+#define GPIOB_PIN3                  3U
+#define GPIOB_PIN4                  4U
+#define GPIOB_PIN5                  5U
+#define GPIOB_PIN6                  6U
+#define GPIOB_PIN7                  7U
+#define GPIOB_PIN8                  8U
+#define GPIOB_PIN9                  9U
+#define GPIOB_PIN10                 10U
+#define GPIOB_PIN11                 11U
+#define GPIOB_PIN12                 12U
+#define GPIOB_SPI2_SCK              13U
+#define GPIOB_SPI2_MISO             14U
+#define GPIOB_SPI2_MOSI             15U
+
+#define GPIOC_MEMS_CS               0U
+#define GPIOC_PIN1                  1U
+#define GPIOC_PIN2                  2U
+#define GPIOC_PIN3                  3U
+#define GPIOC_PIN4                  4U
+#define GPIOC_PIN5                  5U
+#define GPIOC_LED_RED               6U
+#define GPIOC_LED_BLUE              7U
+#define GPIOC_LED_ORANGE            8U
+#define GPIOC_LED_GREEN             9U
+#define GPIOC_PIN10                 10U
+#define GPIOC_PIN11                 11U
+#define GPIOC_PIN12                 12U
+#define GPIOC_PIN13                 13U
+#define GPIOC_OSC32_IN              14U
+#define GPIOC_OSC32_OUT             15U
+
+#define GPIOD_PIN0                  0U
+#define GPIOD_PIN1                  1U
+#define GPIOD_PIN2                  2U
+#define GPIOD_PIN3                  3U
+#define GPIOD_PIN4                  4U
+#define GPIOD_PIN5                  5U
+#define GPIOD_PIN6                  6U
+#define GPIOD_PIN7                  7U
+#define GPIOD_PIN8                  8U
+#define GPIOD_PIN9                  9U
+#define GPIOD_PIN10                 10U
+#define GPIOD_PIN11                 11U
+#define GPIOD_PIN12                 12U
+#define GPIOD_PIN13                 13U
+#define GPIOD_PIN14                 14U
+#define GPIOD_PIN15                 15U
+
+#define GPIOE_PIN0                  0U
+#define GPIOE_PIN1                  1U
+#define GPIOE_PIN2                  2U
+#define GPIOE_PIN3                  3U
+#define GPIOE_PIN4                  4U
+#define GPIOE_PIN5                  5U
+#define GPIOE_PIN6                  6U
+#define GPIOE_PIN7                  7U
+#define GPIOE_PIN8                  8U
+#define GPIOE_PIN9                  9U
+#define GPIOE_PIN10                 10U
+#define GPIOE_PIN11                 11U
+#define GPIOE_PIN12                 12U
+#define GPIOE_PIN13                 13U
+#define GPIOE_PIN14                 14U
+#define GPIOE_PIN15                 15U
+
+#define GPIOF_OSC_IN                0U
+#define GPIOF_OSC_OUT               1U
+#define GPIOF_PIN2                  2U
+#define GPIOF_PIN3                  3U
+#define GPIOF_PIN4                  4U
+#define GPIOF_PIN5                  5U
+#define GPIOF_PIN6                  6U
+#define GPIOF_PIN7                  7U
+#define GPIOF_PIN8                  8U
+#define GPIOF_PIN9                  9U
+#define GPIOF_PIN10                 10U
+#define GPIOF_PIN11                 11U
+#define GPIOF_PIN12                 12U
+#define GPIOF_PIN13                 13U
+#define GPIOF_PIN14                 14U
+#define GPIOF_PIN15                 15U
+
+/*
+ * IO lines assignments.
+ */
+#define LINE_BUTTON                 PAL_LINE(GPIOA, 0U)
+#define LINE_USB_DM                 PAL_LINE(GPIOA, 11U)
+#define LINE_USB_DP                 PAL_LINE(GPIOA, 12U)
+#define LINE_SWDIO                  PAL_LINE(GPIOA, 13U)
+#define LINE_SWCLK                  PAL_LINE(GPIOA, 14U)
+
+#define LINE_SPI2_SCK               PAL_LINE(GPIOB, 13U)
+#define LINE_SPI2_MISO              PAL_LINE(GPIOB, 14U)
+#define LINE_SPI2_MOSI              PAL_LINE(GPIOB, 15U)
+
+#define LINE_MEMS_CS                PAL_LINE(GPIOC, 0U)
+#define LINE_LED_RED                PAL_LINE(GPIOC, 6U)
+#define LINE_LED_BLUE               PAL_LINE(GPIOC, 7U)
+#define LINE_LED_ORANGE             PAL_LINE(GPIOC, 8U)
+#define LINE_LED_GREEN              PAL_LINE(GPIOC, 9U)
+#define LINE_OSC32_IN               PAL_LINE(GPIOC, 14U)
+#define LINE_OSC32_OUT              PAL_LINE(GPIOC, 15U)
+
+
+
+#define LINE_OSC_IN                 PAL_LINE(GPIOF, 0U)
+#define LINE_OSC_OUT                PAL_LINE(GPIOF, 1U)
+
+/*
+ * I/O ports initial setup, this configuration is established soon after reset
+ * in the initialization code.
+ * Please refer to the STM32 Reference Manual for details.
+ */
+#define PIN_MODE_INPUT(n)           (0U << ((n) * 2U))
+#define PIN_MODE_OUTPUT(n)          (1U << ((n) * 2U))
+#define PIN_MODE_ALTERNATE(n)       (2U << ((n) * 2U))
+#define PIN_MODE_ANALOG(n)          (3U << ((n) * 2U))
+#define PIN_ODR_LOW(n)              (0U << (n))
+#define PIN_ODR_HIGH(n)             (1U << (n))
+#define PIN_OTYPE_PUSHPULL(n)       (0U << (n))
+#define PIN_OTYPE_OPENDRAIN(n)      (1U << (n))
+#define PIN_OSPEED_VERYLOW(n)       (0U << ((n) * 2U))
+#define PIN_OSPEED_LOW(n)           (1U << ((n) * 2U))
+#define PIN_OSPEED_MEDIUM(n)        (2U << ((n) * 2U))
+#define PIN_OSPEED_HIGH(n)          (3U << ((n) * 2U))
+#define PIN_PUPDR_FLOATING(n)       (0U << ((n) * 2U))
+#define PIN_PUPDR_PULLUP(n)         (1U << ((n) * 2U))
+#define PIN_PUPDR_PULLDOWN(n)       (2U << ((n) * 2U))
+#define PIN_AFIO_AF(n, v)           ((v) << (((n) % 8U) * 4U))
+
+/*
+ * GPIOA setup:
+ *
+ * PA0  - BUTTON                    (input floating).
+ * PA1  - PIN1                      (input pullup).
+ * PA2  - PIN2                      (input pullup).
+ * PA3  - PIN3                      (input pullup).
+ * PA4  - PIN4                      (input pullup).
+ * PA5  - PIN5                      (input pullup).
+ * PA6  - PIN6                      (input pullup).
+ * PA7  - PIN7                      (input pullup).
+ * PA8  - PIN8                      (input pullup).
+ * PA9  - PIN9                      (input pullup).
+ * PA10 - PIN10                     (input pullup).
+ * PA11 - USB_DM                    (input floating).
+ * PA12 - USB_DP                    (input floating).
+ * PA13 - SWDIO                     (alternate 0).
+ * PA14 - SWCLK                     (alternate 0).
+ * PA15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOA_MODER             (PIN_MODE_INPUT(GPIOA_BUTTON) |         \
+                                     PIN_MODE_INPUT(GPIOA_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOA_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOA_USB_DM) |         \
+                                     PIN_MODE_INPUT(GPIOA_USB_DP) |         \
+                                     PIN_MODE_ALTERNATE(GPIOA_SWDIO) |      \
+                                     PIN_MODE_ALTERNATE(GPIOA_SWCLK) |      \
+                                     PIN_MODE_INPUT(GPIOA_PIN15))
+#define VAL_GPIOA_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOA_BUTTON) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_USB_DM) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_USB_DP) |     \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_SWDIO) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_SWCLK) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOA_PIN15))
+#define VAL_GPIOA_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOA_BUTTON) |     \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOA_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOA_USB_DM) |     \
+                                     PIN_OSPEED_VERYLOW(GPIOA_USB_DP) |     \
+                                     PIN_OSPEED_HIGH(GPIOA_SWDIO) |         \
+                                     PIN_OSPEED_HIGH(GPIOA_SWCLK) |         \
+                                     PIN_OSPEED_HIGH(GPIOA_PIN15))
+#define VAL_GPIOA_PUPDR             (PIN_PUPDR_FLOATING(GPIOA_BUTTON) |     \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN10) |        \
+                                     PIN_PUPDR_FLOATING(GPIOA_USB_DM) |     \
+                                     PIN_PUPDR_FLOATING(GPIOA_USB_DP) |     \
+                                     PIN_PUPDR_PULLUP(GPIOA_SWDIO) |        \
+                                     PIN_PUPDR_PULLDOWN(GPIOA_SWCLK) |      \
+                                     PIN_PUPDR_PULLUP(GPIOA_PIN15))
+#define VAL_GPIOA_ODR               (PIN_ODR_HIGH(GPIOA_BUTTON) |           \
+                                     PIN_ODR_HIGH(GPIOA_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOA_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOA_USB_DM) |           \
+                                     PIN_ODR_HIGH(GPIOA_USB_DP) |           \
+                                     PIN_ODR_HIGH(GPIOA_SWDIO) |            \
+                                     PIN_ODR_HIGH(GPIOA_SWCLK) |            \
+                                     PIN_ODR_HIGH(GPIOA_PIN15))
+#define VAL_GPIOA_AFRL              (PIN_AFIO_AF(GPIOA_BUTTON, 0U) |        \
+                                     PIN_AFIO_AF(GPIOA_PIN1, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN2, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN3, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN4, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN5, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN6, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN7, 0U))
+#define VAL_GPIOA_AFRH              (PIN_AFIO_AF(GPIOA_PIN8, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN9, 0U) |          \
+                                     PIN_AFIO_AF(GPIOA_PIN10, 0U) |         \
+                                     PIN_AFIO_AF(GPIOA_USB_DM, 0U) |        \
+                                     PIN_AFIO_AF(GPIOA_USB_DP, 0U) |        \
+                                     PIN_AFIO_AF(GPIOA_SWDIO, 0U) |         \
+                                     PIN_AFIO_AF(GPIOA_SWCLK, 0U) |         \
+                                     PIN_AFIO_AF(GPIOA_PIN15, 0U))
+
+/*
+ * GPIOB setup:
+ *
+ * PB0  - PIN0                      (input pullup).
+ * PB1  - PIN1                      (input pullup).
+ * PB2  - PIN2                      (input pullup).
+ * PB3  - PIN3                      (input pullup).
+ * PB4  - PIN4                      (input pullup).
+ * PB5  - PIN5                      (input pullup).
+ * PB6  - PIN6                      (input pullup).
+ * PB7  - PIN7                      (input pullup).
+ * PB8  - PIN8                      (input pullup).
+ * PB9  - PIN9                      (input pullup).
+ * PB10 - PIN10                     (input pullup).
+ * PB11 - PIN11                     (input pullup).
+ * PB12 - PIN12                     (input pullup).
+ * PB13 - SPI2_SCK                  (alternate 0).
+ * PB14 - SPI2_MISO                 (alternate 0).
+ * PB15 - SPI2_MOSI                 (alternate 0).
+ */
+#define VAL_GPIOB_MODER             (PIN_MODE_INPUT(GPIOB_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOB_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOB_PIN12) |          \
+                                     PIN_MODE_ALTERNATE(GPIOB_SPI2_SCK) |   \
+                                     PIN_MODE_ALTERNATE(GPIOB_SPI2_MISO) |  \
+                                     PIN_MODE_ALTERNATE(GPIOB_SPI2_MOSI))
+#define VAL_GPIOB_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOB_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_SPI2_SCK) |   \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_SPI2_MISO) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOB_SPI2_MOSI))
+#define VAL_GPIOB_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOB_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN1) |       \
+                                     PIN_OSPEED_HIGH(GPIOB_PIN2) |          \
+                                     PIN_OSPEED_HIGH(GPIOB_PIN3) |          \
+                                     PIN_OSPEED_HIGH(GPIOB_PIN4) |          \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN5) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN6) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN7) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN8) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN9) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOB_SPI2_SCK) |   \
+                                     PIN_OSPEED_VERYLOW(GPIOB_SPI2_MISO) |  \
+                                     PIN_OSPEED_VERYLOW(GPIOB_SPI2_MOSI))
+#define VAL_GPIOB_PUPDR             (PIN_PUPDR_PULLUP(GPIOB_PIN0) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN5) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN6) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN7) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN8) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN9) |         \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN12) |        \
+                                     PIN_PUPDR_FLOATING(GPIOB_SPI2_SCK) |   \
+                                     PIN_PUPDR_FLOATING(GPIOB_SPI2_MISO) |  \
+                                     PIN_PUPDR_FLOATING(GPIOB_SPI2_MOSI))
+#define VAL_GPIOB_ODR               (PIN_ODR_HIGH(GPIOB_PIN0) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN5) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN6) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN7) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN8) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN9) |             \
+                                     PIN_ODR_HIGH(GPIOB_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOB_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOB_SPI2_SCK) |         \
+                                     PIN_ODR_HIGH(GPIOB_SPI2_MISO) |        \
+                                     PIN_ODR_HIGH(GPIOB_SPI2_MOSI))
+#define VAL_GPIOB_AFRL              (PIN_AFIO_AF(GPIOB_PIN0, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN1, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN2, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN3, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN4, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN5, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN6, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN7, 0U))
+#define VAL_GPIOB_AFRH              (PIN_AFIO_AF(GPIOB_PIN8, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN9, 0U) |          \
+                                     PIN_AFIO_AF(GPIOB_PIN10, 0U) |         \
+                                     PIN_AFIO_AF(GPIOB_PIN11, 0U) |         \
+                                     PIN_AFIO_AF(GPIOB_PIN12, 0U) |         \
+                                     PIN_AFIO_AF(GPIOB_SPI2_SCK, 0U) |      \
+                                     PIN_AFIO_AF(GPIOB_SPI2_MISO, 0U) |     \
+                                     PIN_AFIO_AF(GPIOB_SPI2_MOSI, 0U))
+
+/*
+ * GPIOC setup:
+ *
+ * PC0  - MEMS_CS                   (output pushpull maximum).
+ * PC1  - PIN1                      (input pullup).
+ * PC2  - PIN2                      (input pullup).
+ * PC3  - PIN3                      (input pullup).
+ * PC4  - PIN4                      (input pullup).
+ * PC5  - PIN5                      (input pullup).
+ * PC6  - LED_RED                   (output pushpull maximum).
+ * PC7  - LED_BLUE                  (output pushpull maximum).
+ * PC8  - LED_ORANGE                (output pushpull maximum).
+ * PC9  - LED_GREEN                 (output pushpull maximum).
+ * PC10 - PIN10                     (input pullup).
+ * PC11 - PIN11                     (input pullup).
+ * PC12 - PIN12                     (input pullup).
+ * PC13 - PIN13                     (input pullup).
+ * PC14 - OSC32_IN                  (input floating).
+ * PC15 - OSC32_OUT                 (input floating).
+ */
+#define VAL_GPIOC_MODER             (PIN_MODE_OUTPUT(GPIOC_MEMS_CS) |       \
+                                     PIN_MODE_INPUT(GPIOC_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOC_PIN5) |           \
+                                     PIN_MODE_OUTPUT(GPIOC_LED_RED) |       \
+                                     PIN_MODE_OUTPUT(GPIOC_LED_BLUE) |      \
+                                     PIN_MODE_OUTPUT(GPIOC_LED_ORANGE) |    \
+                                     PIN_MODE_OUTPUT(GPIOC_LED_GREEN) |     \
+                                     PIN_MODE_INPUT(GPIOC_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOC_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOC_OSC32_IN) |       \
+                                     PIN_MODE_INPUT(GPIOC_OSC32_OUT))
+#define VAL_GPIOC_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOC_MEMS_CS) |    \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_LED_RED) |    \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_LED_BLUE) |   \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_LED_ORANGE) | \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_LED_GREEN) |  \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_OSC32_IN) |   \
+                                     PIN_OTYPE_PUSHPULL(GPIOC_OSC32_OUT))
+#define VAL_GPIOC_OSPEEDR           (PIN_OSPEED_HIGH(GPIOC_MEMS_CS) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN2) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN3) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN4) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN5) |       \
+                                     PIN_OSPEED_HIGH(GPIOC_LED_RED) |       \
+                                     PIN_OSPEED_HIGH(GPIOC_LED_BLUE) |      \
+                                     PIN_OSPEED_HIGH(GPIOC_LED_ORANGE) |    \
+                                     PIN_OSPEED_HIGH(GPIOC_LED_GREEN) |     \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN10) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN11) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN12) |      \
+                                     PIN_OSPEED_VERYLOW(GPIOC_PIN13) |      \
+                                     PIN_OSPEED_HIGH(GPIOC_OSC32_IN) |      \
+                                     PIN_OSPEED_HIGH(GPIOC_OSC32_OUT))
+#define VAL_GPIOC_PUPDR             (PIN_PUPDR_FLOATING(GPIOC_MEMS_CS) |    \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN1) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN2) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN3) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN4) |         \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN5) |         \
+                                     PIN_PUPDR_FLOATING(GPIOC_LED_RED) |    \
+                                     PIN_PUPDR_FLOATING(GPIOC_LED_BLUE) |   \
+                                     PIN_PUPDR_FLOATING(GPIOC_LED_ORANGE) | \
+                                     PIN_PUPDR_FLOATING(GPIOC_LED_GREEN) |  \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN10) |        \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN11) |        \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN12) |        \
+                                     PIN_PUPDR_PULLUP(GPIOC_PIN13) |        \
+                                     PIN_PUPDR_FLOATING(GPIOC_OSC32_IN) |   \
+                                     PIN_PUPDR_FLOATING(GPIOC_OSC32_OUT))
+#define VAL_GPIOC_ODR               (PIN_ODR_HIGH(GPIOC_MEMS_CS) |          \
+                                     PIN_ODR_HIGH(GPIOC_PIN1) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN2) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN3) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN4) |             \
+                                     PIN_ODR_HIGH(GPIOC_PIN5) |             \
+                                     PIN_ODR_LOW(GPIOC_LED_RED) |           \
+                                     PIN_ODR_LOW(GPIOC_LED_BLUE) |          \
+                                     PIN_ODR_LOW(GPIOC_LED_ORANGE) |        \
+                                     PIN_ODR_LOW(GPIOC_LED_GREEN) |         \
+                                     PIN_ODR_HIGH(GPIOC_PIN10) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN11) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN12) |            \
+                                     PIN_ODR_HIGH(GPIOC_PIN13) |            \
+                                     PIN_ODR_HIGH(GPIOC_OSC32_IN) |         \
+                                     PIN_ODR_HIGH(GPIOC_OSC32_OUT))
+#define VAL_GPIOC_AFRL              (PIN_AFIO_AF(GPIOC_MEMS_CS, 0U) |       \
+                                     PIN_AFIO_AF(GPIOC_PIN1, 0U) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN2, 0U) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN3, 0U) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN4, 0U) |          \
+                                     PIN_AFIO_AF(GPIOC_PIN5, 0U) |          \
+                                     PIN_AFIO_AF(GPIOC_LED_RED, 0U) |       \
+                                     PIN_AFIO_AF(GPIOC_LED_BLUE, 0U))
+#define VAL_GPIOC_AFRH              (PIN_AFIO_AF(GPIOC_LED_ORANGE, 0U) |    \
+                                     PIN_AFIO_AF(GPIOC_LED_GREEN, 0U) |     \
+                                     PIN_AFIO_AF(GPIOC_PIN10, 0U) |         \
+                                     PIN_AFIO_AF(GPIOC_PIN11, 0U) |         \
+                                     PIN_AFIO_AF(GPIOC_PIN12, 0U) |         \
+                                     PIN_AFIO_AF(GPIOC_PIN13, 0U) |         \
+                                     PIN_AFIO_AF(GPIOC_OSC32_IN, 0U) |      \
+                                     PIN_AFIO_AF(GPIOC_OSC32_OUT, 0U))
+
+/*
+ * GPIOD setup:
+ *
+ * PD0  - PIN0                      (input pullup).
+ * PD1  - PIN1                      (input pullup).
+ * PD2  - PIN2                      (input pullup).
+ * PD3  - PIN3                      (input pullup).
+ * PD4  - PIN4                      (input pullup).
+ * PD5  - PIN5                      (input pullup).
+ * PD6  - PIN6                      (input pullup).
+ * PD7  - PIN7                      (input pullup).
+ * PD8  - PIN8                      (input pullup).
+ * PD9  - PIN9                      (input pullup).
+ * PD10 - PIN10                     (input pullup).
+ * PD11 - PIN11                     (input pullup).
+ * PD12 - PIN12                     (input pullup).
+ * PD13 - PIN13                     (input pullup).
+ * PD14 - PIN14                     (input pullup).
+ * PD15 - PIN15                     (input pullup).
+ */
+#define VAL_GPIOD_MODER             (PIN_MODE_INPUT(GPIOD_PIN0) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN1) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN2) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN3) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN4) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN5) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN6) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN7) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN8) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN9) |           \
+                                     PIN_MODE_INPUT(GPIOD_PIN10) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN11) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN12) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN13) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN14) |          \
+                                     PIN_MODE_INPUT(GPIOD_PIN15))
+#define VAL_GPIOD_OTYPER            (PIN_OTYPE_PUSHPULL(GPIOD_PIN0) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN1) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN2) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN3) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN4) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN5) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN6) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN7) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN8) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN9) |       \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN10) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN11) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN12) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN13) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN14) |      \
+                                     PIN_OTYPE_PUSHPULL(GPIOD_PIN15))
+#define VAL_GPIOD_OSPEEDR           (PIN_OSPEED_VERYLOW(GPIOD_PIN0) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN1) |       \
+                                     PIN_OSPEED_VERYLOW(GPIOD_PIN2) |       \
+