1 files changed, 127 insertions, 0 deletions
diff --git a/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/board_ST7565.h b/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/board_ST7565.h
new file mode 100644
index 0000000000..290571ce5b
--- /dev/null
+++ b/keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/board_ST7565.h
@@ -0,0 +1,127 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+#include "print.h"
+
+#define ST7565_LCD_BIAS         ST7565_LCD_BIAS_9 // actually 6
+#define ST7565_ADC              ST7565_ADC_NORMAL
+#define ST7565_COM_SCAN         ST7565_COM_SCAN_DEC
+#define ST7565_PAGE_ORDER       0,1,2,3
+/*
+ * Custom page order for several LCD boards, e.g. HEM12864-99
+ * #define ST7565_PAGE_ORDER       4,5,6,7,0,1,2,3
+ */
+
+#define ST7565_GPIOPORT GPIOC
+#define ST7565_PORT PORTC
+#define ST7565_A0_PIN 7
+#define ST7565_RST_PIN 8
+#define ST7565_MOSI_PIN 6
+#define ST7565_SLCK_PIN 5
+#define ST7565_SS_PIN 4
+
+#define palSetPadModeRaw(portname, bits) \
+    ST7565_PORT->PCR[ST7565_##portname##_PIN] = bits
+
+#define palSetPadModeNamed(portname, portmode) \
+    palSetPadMode(ST7565_GPIOPORT, ST7565_##portname##_PIN, portmode)
+
+#define ST7565_SPI_MODE PORTx_PCRn_DSE | PORTx_PCRn_MUX(2)
+// DSPI Clock and Transfer Attributes
+// Frame Size: 8 bits
+// MSB First
+// CLK Low by default
+static const SPIConfig spi1config = {
+	NULL,
+	/* HW dependent part.*/
+	ST7565_GPIOPORT,
+    ST7565_SS_PIN,
+    SPIx_CTARn_FMSZ(7)
+    | SPIx_CTARn_ASC(7)
+    | SPIx_CTARn_DT(7)
+    | SPIx_CTARn_CSSCK(7)
+    | SPIx_CTARn_PBR(0)
+    | SPIx_CTARn_BR(7)
+	//SPI_CR1_BR_0
+};
+
+static bool_t st7565_is_data_mode = 1;
+
+static GFXINLINE void init_board(GDisplay *g) {
+    (void) g;
+    palSetPadModeNamed(A0, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
+    st7565_is_data_mode = 1;
+    palSetPadModeNamed(RST, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
+    palSetPadModeRaw(MOSI, ST7565_SPI_MODE);
+    palSetPadModeRaw(SLCK, ST7565_SPI_MODE);
+    palSetPadModeRaw(SS, ST7565_SPI_MODE);
+
+    spiInit();
+    spiStart(&SPID1, &spi1config);
+    spiSelect(&SPID1);
+}
+
+static GFXINLINE void post_init_board(GDisplay *g) {
+	(void) g;
+}
+
+static GFXINLINE void setpin_reset(GDisplay *g, bool_t state) {
+    (void) g;
+    if (state) {
+        palClearPad(ST7565_GPIOPORT, ST7565_RST_PIN);
+    }
+    else {
+        palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
+    }
+}
+
+static GFXINLINE void acquire_bus(GDisplay *g) {
+    (void) g;
+    // Only the LCD is using the SPI bus, so no need to acquire
+    // spiAcquireBus(&SPID1);
+}
+
+static GFXINLINE void release_bus(GDisplay *g) {
+    (void) g;
+    // Only the LCD is using the SPI bus, so no need to release
+    //spiReleaseBus(&SPID1);
+}
+
+static GFXINLINE void write_cmd(GDisplay *g, uint8_t cmd) {
+	(void) g;
+	if (st7565_is_data_mode) {
+	    // The sleeps need to be at lest 10 vs 25 ns respectively
+	    // So let's sleep two ticks, one tick might not be enough
+	    // if we are at the end of the tick
+	    chThdSleep(2);
+        palClearPad(ST7565_GPIOPORT, ST7565_A0_PIN);
+        chThdSleep(2);
+        st7565_is_data_mode = 0;
+	}
+	spiSend(&SPID1, 1, &cmd);
+}
+
+static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
+	(void) g;
+	if (!st7565_is_data_mode) {
+	    // The sleeps need to be at lest 10 vs 25 ns respectively
+	    // So let's sleep two ticks, one tick might not be enough
+	    // if we are at the end of the tick
+	    chThdSleep(2);
+        palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
+	    chThdSleep(2);
+        st7565_is_data_mode = 1;
+	}
+	spiSend(&SPID1, length, data);
+}
+
+#endif /* _GDISP_LLD_BOARD_H */