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-rw-r--r--platforms/avr/bootloader.c293
-rw-r--r--platforms/avr/bootloaders/bootloadhid.c33
-rw-r--r--platforms/avr/bootloaders/caterina.c39
-rw-r--r--platforms/avr/bootloaders/dfu.c52
-rw-r--r--platforms/avr/bootloaders/halfkay.c128
-rw-r--r--platforms/avr/bootloaders/none.c19
-rw-r--r--platforms/avr/bootloaders/usbasploader.c56
-rw-r--r--platforms/avr/drivers/i2c_master.c7
-rw-r--r--platforms/avr/drivers/serial.c7
-rw-r--r--platforms/avr/gpio.h17
10 files changed, 336 insertions, 315 deletions
diff --git a/platforms/avr/bootloader.c b/platforms/avr/bootloader.c
deleted file mode 100644
index c0272903b8..0000000000
--- a/platforms/avr/bootloader.c
+++ /dev/null
@@ -1,293 +0,0 @@
-#include <stdint.h>
-#include <stdbool.h>
-#include <avr/io.h>
-#include <avr/eeprom.h>
-#include <avr/interrupt.h>
-#include <avr/wdt.h>
-#include <util/delay.h>
-#include "bootloader.h"
-#include <avr/boot.h>
-
-#ifdef PROTOCOL_LUFA
-# include <LUFA/Drivers/USB/USB.h>
-#endif
-
-/** \brief Bootloader Size in *bytes*
- *
- * AVR Boot section size are defined by setting BOOTSZ fuse in fact. Consult with your MCU datasheet.
- * Note that 'Word'(2 bytes) size and address are used in datasheet while TMK uses 'Byte'.
- *
- * Size of Bootloaders in bytes:
- * Atmel DFU loader(ATmega32U4) 4096
- * Atmel DFU loader(AT90USB128) 8192
- * LUFA bootloader(ATmega32U4) 4096
- * Arduino Caterina(ATmega32U4) 4096
- * USBaspLoader(ATmega***) 2048
- * Teensy halfKay(ATmega32U4) 512
- * Teensy++ halfKay(AT90USB128) 1024
- *
- * AVR Boot section is located at the end of Flash memory like the followings.
- *
- * byte Atmel/LUFA(ATMega32u4) byte Atmel(AT90SUB128)
- * 0x0000 +---------------+ 0x00000 +---------------+
- * | | | |
- * | | | |
- * | Application | | Application |
- * | | | |
- * = = = =
- * | | 32KB-4KB | | 128KB-8KB
- * 0x7000 +---------------+ 0x1E000 +---------------+
- * | Bootloader | 4KB | Bootloader | 8KB
- * 0x7FFF +---------------+ 0x1FFFF +---------------+
- *
- *
- * byte Teensy(ATMega32u4) byte Teensy++(AT90SUB128)
- * 0x0000 +---------------+ 0x00000 +---------------+
- * | | | |
- * | | | |
- * | Application | | Application |
- * | | | |
- * = = = =
- * | | 32KB-512B | | 128KB-1KB
- * 0x7E00 +---------------+ 0x1FC00 +---------------+
- * | Bootloader | 512B | Bootloader | 1KB
- * 0x7FFF +---------------+ 0x1FFFF +---------------+
- */
-#define FLASH_SIZE (FLASHEND + 1L)
-
-#if !defined(BOOTLOADER_SIZE)
-uint16_t bootloader_start;
-#endif
-
-// compatibility between ATMega8 and ATMega88
-#if !defined(MCUCSR)
-# if defined(MCUSR)
-# define MCUCSR MCUSR
-# endif
-#endif
-
-/** \brief Entering the Bootloader via Software
- *
- * http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
- */
-#define BOOTLOADER_RESET_KEY 0xB007B007
-uint32_t reset_key __attribute__((section(".noinit,\"aw\",@nobits;")));
-
-/** \brief initialize MCU status by watchdog reset
- *
- * FIXME: needs doc
- */
-__attribute__((weak)) void bootloader_jump(void) {
-#if !defined(BOOTLOADER_SIZE)
- uint8_t high_fuse = boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS);
-
- if (high_fuse & ~(FUSE_BOOTSZ0 & FUSE_BOOTSZ1)) {
- bootloader_start = (FLASH_SIZE - 512) >> 1;
- } else if (high_fuse & ~(FUSE_BOOTSZ1)) {
- bootloader_start = (FLASH_SIZE - 1024) >> 1;
- } else if (high_fuse & ~(FUSE_BOOTSZ0)) {
- bootloader_start = (FLASH_SIZE - 2048) >> 1;
- } else {
- bootloader_start = (FLASH_SIZE - 4096) >> 1;
- }
-#endif
-
- // Something like this might work, but it compiled larger than the block above
- // bootloader_start = FLASH_SIZE - (256 << (~high_fuse & 0b110 >> 1));
-
-#if defined(BOOTLOADER_HALFKAY)
- // http://www.pjrc.com/teensy/jump_to_bootloader.html
- cli();
- // disable watchdog, if enabled (it's not)
- // disable all peripherals
- // a shutdown call might make sense here
- UDCON = 1;
- USBCON = (1 << FRZCLK); // disable USB
- UCSR1B = 0;
- _delay_ms(5);
-# if defined(__AVR_AT90USB162__) // Teensy 1.0
- EIMSK = 0;
- PCICR = 0;
- SPCR = 0;
- ACSR = 0;
- EECR = 0;
- TIMSK0 = 0;
- TIMSK1 = 0;
- UCSR1B = 0;
- DDRB = 0;
- DDRC = 0;
- DDRD = 0;
- PORTB = 0;
- PORTC = 0;
- PORTD = 0;
- asm volatile("jmp 0x3E00");
-# elif defined(__AVR_ATmega32U4__) // Teensy 2.0
- EIMSK = 0;
- PCICR = 0;
- SPCR = 0;
- ACSR = 0;
- EECR = 0;
- ADCSRA = 0;
- TIMSK0 = 0;
- TIMSK1 = 0;
- TIMSK3 = 0;
- TIMSK4 = 0;
- UCSR1B = 0;
- TWCR = 0;
- DDRB = 0;
- DDRC = 0;
- DDRD = 0;
- DDRE = 0;
- DDRF = 0;
- TWCR = 0;
- PORTB = 0;
- PORTC = 0;
- PORTD = 0;
- PORTE = 0;
- PORTF = 0;
- asm volatile("jmp 0x7E00");
-# elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
- EIMSK = 0;
- PCICR = 0;
- SPCR = 0;
- ACSR = 0;
- EECR = 0;
- ADCSRA = 0;
- TIMSK0 = 0;
- TIMSK1 = 0;
- TIMSK2 = 0;
- TIMSK3 = 0;
- UCSR1B = 0;
- TWCR = 0;
- DDRA = 0;
- DDRB = 0;
- DDRC = 0;
- DDRD = 0;
- DDRE = 0;
- DDRF = 0;
- PORTA = 0;
- PORTB = 0;
- PORTC = 0;
- PORTD = 0;
- PORTE = 0;
- PORTF = 0;
- asm volatile("jmp 0xFC00");
-# elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
- EIMSK = 0;
- PCICR = 0;
- SPCR = 0;
- ACSR = 0;
- EECR = 0;
- ADCSRA = 0;
- TIMSK0 = 0;
- TIMSK1 = 0;
- TIMSK2 = 0;
- TIMSK3 = 0;
- UCSR1B = 0;
- TWCR = 0;
- DDRA = 0;
- DDRB = 0;
- DDRC = 0;
- DDRD = 0;
- DDRE = 0;
- DDRF = 0;
- PORTA = 0;
- PORTB = 0;
- PORTC = 0;
- PORTD = 0;
- PORTE = 0;
- PORTF = 0;
- asm volatile("jmp 0x1FC00");
-# endif
-
-#elif defined(BOOTLOADER_CATERINA)
- // this block may be optional
- // TODO: figure it out
-
- uint16_t *const bootKeyPtr = (uint16_t *)0x0800;
-
- // Value used by Caterina bootloader use to determine whether to run the
- // sketch or the bootloader programmer.
- uint16_t bootKey = 0x7777;
-
- *bootKeyPtr = bootKey;
-
- // setup watchdog timeout
- wdt_enable(WDTO_60MS);
-
- while (1) {
- } // wait for watchdog timer to trigger
-
-#elif defined(BOOTLOADER_USBASP)
- // Taken with permission of Stephan Baerwolf from https://github.com/tinyusbboard/API/blob/master/apipage.c
- wdt_enable(WDTO_15MS);
- wdt_reset();
- asm volatile("cli \n\t"
- "ldi r29 , %[ramendhi] \n\t"
- "ldi r28 , %[ramendlo] \n\t"
-# if (FLASHEND > 131071)
- "ldi r18 , %[bootaddrhi] \n\t"
- "st Y+, r18 \n\t"
-# endif
- "ldi r18 , %[bootaddrme] \n\t"
- "st Y+, r18 \n\t"
- "ldi r18 , %[bootaddrlo] \n\t"
- "st Y+, r18 \n\t"
- "out %[mcucsrio], __zero_reg__ \n\t"
- "bootloader_startup_loop%=: \n\t"
- "rjmp bootloader_startup_loop%= \n\t"
- :
- : [mcucsrio] "I"(_SFR_IO_ADDR(MCUCSR)),
-# if (FLASHEND > 131071)
- [ramendhi] "M"(((RAMEND - 2) >> 8) & 0xff), [ramendlo] "M"(((RAMEND - 2) >> 0) & 0xff), [bootaddrhi] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 16) & 0xff),
-# else
- [ramendhi] "M"(((RAMEND - 1) >> 8) & 0xff), [ramendlo] "M"(((RAMEND - 1) >> 0) & 0xff),
-# endif
- [bootaddrme] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 8) & 0xff), [bootaddrlo] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 0) & 0xff));
-
-#else // Assume remaining boards are DFU, even if the flag isn't set
-
-# if !(defined(__AVR_ATmega32A__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__) || defined(__AVR_ATtiny85__)) // no USB - maybe BOOTLOADER_BOOTLOADHID instead though?
- UDCON = 1;
- USBCON = (1 << FRZCLK); // disable USB
- UCSR1B = 0;
- _delay_ms(5); // 5 seems to work fine
-# endif
-
-# ifdef BOOTLOADER_BOOTLOADHID
- // force bootloadHID to stay in bootloader mode, so that it waits
- // for a new firmware to be flashed
- eeprom_write_byte((uint8_t *)1, 0x00);
-# endif
-
- // watchdog reset
- reset_key = BOOTLOADER_RESET_KEY;
- wdt_enable(WDTO_250MS);
- for (;;)
- ;
-#endif
-}
-
-/* this runs before main() */
-void bootloader_jump_after_watchdog_reset(void) __attribute__((used, naked, section(".init3")));
-void bootloader_jump_after_watchdog_reset(void) {
-#ifndef BOOTLOADER_HALFKAY
- if ((MCUCSR & (1 << WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
- reset_key = 0;
-
- // My custom USBasploader requires this to come up.
- MCUCSR = 0;
-
- // Seems like Teensy halfkay loader requires clearing WDRF and disabling watchdog.
- MCUCSR &= ~(1 << WDRF);
- wdt_disable();
-
-// This is compled into 'icall', address should be in word unit, not byte.
-# ifdef BOOTLOADER_SIZE
- ((void (*)(void))((FLASH_SIZE - BOOTLOADER_SIZE) >> 1))();
-# else
- asm("ijmp" ::"z"(bootloader_start));
-# endif
- }
-#endif
-}
diff --git a/platforms/avr/bootloaders/bootloadhid.c b/platforms/avr/bootloaders/bootloadhid.c
new file mode 100644
index 0000000000..ae58760d7d
--- /dev/null
+++ b/platforms/avr/bootloaders/bootloadhid.c
@@ -0,0 +1,33 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+#include <avr/eeprom.h>
+#include <avr/wdt.h>
+
+__attribute__((weak)) void bootloader_jump(void) {
+ // force bootloadHID to stay in bootloader mode, so that it waits
+ // for a new firmware to be flashed
+ // NOTE: this byte is part of QMK's "magic number" - changing it causes the EEPROM to be re-initialized
+ // thus every time the device is flashed the EEPROM will be wiped
+ eeprom_write_byte((uint8_t *)1, 0x00);
+
+ // watchdog reset
+ wdt_enable(WDTO_250MS);
+ for (;;)
+ ;
+}
diff --git a/platforms/avr/bootloaders/caterina.c b/platforms/avr/bootloaders/caterina.c
new file mode 100644
index 0000000000..82a16a3765
--- /dev/null
+++ b/platforms/avr/bootloaders/caterina.c
@@ -0,0 +1,39 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+#include <avr/wdt.h>
+
+__attribute__((weak)) void bootloader_jump(void) {
+ // this block may be optional
+ // TODO: figure it out
+
+ uint16_t *const bootKeyPtr = (uint16_t *)0x0800;
+
+ // Value used by Caterina bootloader use to determine whether to run the
+ // sketch or the bootloader programmer.
+ uint16_t bootKey = 0x7777;
+
+ *bootKeyPtr = bootKey;
+
+ // setup watchdog timeout
+ wdt_enable(WDTO_60MS);
+
+ // wait for watchdog timer to trigger
+ while (1) {
+ }
+}
diff --git a/platforms/avr/bootloaders/dfu.c b/platforms/avr/bootloaders/dfu.c
new file mode 100644
index 0000000000..cb42821a93
--- /dev/null
+++ b/platforms/avr/bootloaders/dfu.c
@@ -0,0 +1,52 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+#include <avr/wdt.h>
+#include <util/delay.h>
+
+#define FLASH_SIZE (FLASHEND + 1L)
+
+/** \brief Entering the Bootloader via Software
+ *
+ * http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
+ */
+#define BOOTLOADER_RESET_KEY 0xB007B007
+uint32_t reset_key __attribute__((section(".noinit,\"aw\",@nobits;")));
+
+__attribute__((weak)) void bootloader_jump(void) {
+ UDCON = 1;
+ USBCON = (1 << FRZCLK); // disable USB
+ UCSR1B = 0;
+ _delay_ms(5); // 5 seems to work fine
+
+ // watchdog reset
+ reset_key = BOOTLOADER_RESET_KEY;
+ wdt_enable(WDTO_250MS);
+ for (;;)
+ ;
+}
+
+/* this runs before main() */
+void bootloader_jump_after_watchdog_reset(void) __attribute__((used, naked, section(".init3")));
+void bootloader_jump_after_watchdog_reset(void) {
+ if ((MCUSR & (1 << WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
+ reset_key = 0;
+
+ ((void (*)(void))((FLASH_SIZE - BOOTLOADER_SIZE) >> 1))();
+ }
+}
diff --git a/platforms/avr/bootloaders/halfkay.c b/platforms/avr/bootloaders/halfkay.c
new file mode 100644
index 0000000000..6ce2e19114
--- /dev/null
+++ b/platforms/avr/bootloaders/halfkay.c
@@ -0,0 +1,128 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+#include <avr/interrupt.h>
+#include <util/delay.h>
+
+__attribute__((weak)) void bootloader_jump(void) {
+ // http://www.pjrc.com/teensy/jump_to_bootloader.html
+
+ cli();
+ // disable watchdog, if enabled (it's not)
+ // disable all peripherals
+ // a shutdown call might make sense here
+ UDCON = 1;
+ USBCON = (1 << FRZCLK); // disable USB
+ UCSR1B = 0;
+ _delay_ms(5);
+
+#if defined(__AVR_AT90USB162__) // Teensy 1.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ UCSR1B = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ asm volatile("jmp 0x3E00");
+#elif defined(__AVR_ATmega32U4__) // Teensy 2.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ ADCSRA = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ TIMSK3 = 0;
+ TIMSK4 = 0;
+ UCSR1B = 0;
+ TWCR = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ DDRE = 0;
+ DDRF = 0;
+ TWCR = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ PORTE = 0;
+ PORTF = 0;
+ asm volatile("jmp 0x7E00");
+#elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ ADCSRA = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ TIMSK2 = 0;
+ TIMSK3 = 0;
+ UCSR1B = 0;
+ TWCR = 0;
+ DDRA = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ DDRE = 0;
+ DDRF = 0;
+ PORTA = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ PORTE = 0;
+ PORTF = 0;
+ asm volatile("jmp 0xFC00");
+#elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ ADCSRA = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ TIMSK2 = 0;
+ TIMSK3 = 0;
+ UCSR1B = 0;
+ TWCR = 0;
+ DDRA = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ DDRE = 0;
+ DDRF = 0;
+ PORTA = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ PORTE = 0;
+ PORTF = 0;
+ asm volatile("jmp 0x1FC00");
+#endif
+}
diff --git a/platforms/avr/bootloaders/none.c b/platforms/avr/bootloaders/none.c
new file mode 100644
index 0000000000..624fbe242a
--- /dev/null
+++ b/platforms/avr/bootloaders/none.c
@@ -0,0 +1,19 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+__attribute__((weak)) void bootloader_jump(void) {}
diff --git a/platforms/avr/bootloaders/usbasploader.c b/platforms/avr/bootloaders/usbasploader.c
new file mode 100644
index 0000000000..008bd16069
--- /dev/null
+++ b/platforms/avr/bootloaders/usbasploader.c
@@ -0,0 +1,56 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+#include <avr/wdt.h>
+
+#define FLASH_SIZE (FLASHEND + 1L)
+
+#if !defined(MCUCSR)
+# if defined(MCUSR)
+# define MCUCSR MCUSR
+# endif
+#endif
+
+__attribute__((weak)) void bootloader_jump(void) {
+ // Taken with permission of Stephan Baerwolf from https://github.com/tinyusbboard/API/blob/master/apipage.c
+
+ wdt_enable(WDTO_15MS);
+ wdt_reset();
+ asm volatile("cli \n\t"
+ "ldi r29 , %[ramendhi] \n\t"
+ "ldi r28 , %[ramendlo] \n\t"
+#if (FLASHEND > 131071)
+ "ldi r18 , %[bootaddrhi] \n\t"
+ "st Y+, r18 \n\t"
+#endif
+ "ldi r18 , %[bootaddrme] \n\t"
+ "st Y+, r18 \n\t"
+ "ldi r18 , %[bootaddrlo] \n\t"
+ "st Y+, r18 \n\t"
+ "out %[mcucsrio], __zero_reg__ \n\t"
+ "bootloader_startup_loop%=: \n\t"
+ "rjmp bootloader_startup_loop%= \n\t"
+ :
+ : [mcucsrio] "I"(_SFR_IO_ADDR(MCUCSR)),
+#if (FLASHEND > 131071)
+ [ramendhi] "M"(((RAMEND - 2) >> 8) & 0xff), [ramendlo] "M"(((RAMEND - 2) >> 0) & 0xff), [bootaddrhi] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 16) & 0xff),
+#else
+ [ramendhi] "M"(((RAMEND - 1) >> 8) & 0xff), [ramendlo] "M"(((RAMEND - 1) >> 0) & 0xff),
+#endif
+ [bootaddrme] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 8) & 0xff), [bootaddrlo] "M"((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 0) & 0xff));
+}
diff --git a/platforms/avr/drivers/i2c_master.c b/platforms/avr/drivers/i2c_master.c
index 111b55d6b0..d4024378ca 100644
--- a/platforms/avr/drivers/i2c_master.c
+++ b/platforms/avr/drivers/i2c_master.c
@@ -32,6 +32,9 @@
# define I2C_START_RETRY_COUNT 20
#endif // I2C_START_RETRY_COUNT
+#define I2C_ACTION_READ 0x01
+#define I2C_ACTION_WRITE 0x00
+
#define TWBR_val (((F_CPU / F_SCL) - 16) / 2)
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
@@ -154,7 +157,7 @@ int16_t i2c_read_nack(uint16_t timeout) {
}
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_status_t status = i2c_start(address | I2C_WRITE, timeout);
+ i2c_status_t status = i2c_start(address | I2C_ACTION_WRITE, timeout);
for (uint16_t i = 0; i < length && status >= 0; i++) {
status = i2c_write(data[i], timeout);
@@ -166,7 +169,7 @@ i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length,
}
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) {
- i2c_status_t status = i2c_start(address | I2C_READ, timeout);
+ i2c_status_t status = i2c_start(address | I2C_ACTION_READ, timeout);
for (uint16_t i = 0; i < (length - 1) && status >= 0; i++) {
status = i2c_read_ack(timeout);
diff --git a/platforms/avr/drivers/serial.c b/platforms/avr/drivers/serial.c
index 9a7345a53d..ab0b52afd1 100644
--- a/platforms/avr/drivers/serial.c
+++ b/platforms/avr/drivers/serial.c
@@ -16,6 +16,7 @@
#include <util/delay.h>
#include <stddef.h>
#include <stdbool.h>
+#include "gpio.h"
#include "serial.h"
#ifdef SOFT_SERIAL_PIN
@@ -119,12 +120,6 @@
# error invalid SOFT_SERIAL_PIN value
# endif
-# define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
-# define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
-# define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
-# define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
-# define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
-
# define ALWAYS_INLINE __attribute__((always_inline))
# define NO_INLINE __attribute__((noinline))
# define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
diff --git a/platforms/avr/gpio.h b/platforms/avr/gpio.h
index e9be68491d..95f15c28dc 100644
--- a/platforms/avr/gpio.h
+++ b/platforms/avr/gpio.h
@@ -25,7 +25,9 @@ typedef uint8_t pin_t;
#define setPinInput(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
#define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinInputLow(pin) _Static_assert(0, "AVR processors cannot implement an input as pull low")
-#define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
+#define setPinOutputPushPull(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
+#define setPinOutputOpenDrain(pin) _Static_assert(0, "AVR platform does not implement an open-drain output")
+#define setPinOutput(pin) setPinOutputPushPull(pin)
#define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
#define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
@@ -34,16 +36,3 @@ typedef uint8_t pin_t;
#define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
#define togglePin(pin) (PORTx_ADDRESS(pin) ^= _BV((pin)&0xF))
-
-/* Operation of GPIO by port. */
-
-typedef uint8_t port_data_t;
-
-#define readPort(port) PINx_ADDRESS(port)
-
-#define setPortBitInput(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) &= ~_BV((bit)&0xF))
-#define setPortBitInputHigh(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) |= _BV((bit)&0xF))
-#define setPortBitOutput(port, bit) (DDRx_ADDRESS(port) |= _BV((bit)&0xF))
-
-#define writePortBitLow(port, bit) (PORTx_ADDRESS(port) &= ~_BV((bit)&0xF))
-#define writePortBitHigh(port, bit) (PORTx_ADDRESS(port) |= _BV((bit)&0xF))
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 21:31:37 +0000