1 files changed, 113 insertions, 0 deletions
diff --git a/keyboards/ergodox/infinity/board_st7565.h b/keyboards/ergodox/infinity/board_st7565.h
new file mode 100644
index 0000000000..9ab636c95d
--- /dev/null
+++ b/keyboards/ergodox/infinity/board_st7565.h
@@ -0,0 +1,113 @@
+/*
+ * 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
+
+#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 = {
+   // Operation complete callback or @p NULL.
+  .end_cb = NULL,
+   //The chip select line port - when not using pcs.
+  .ssport = ST7565_GPIOPORT,
+   // brief The chip select line pad number - when not using pcs.
+  .sspad=ST7565_SS_PIN,
+   // SPI initialization data.
+  .tar0 =
+    SPIx_CTARn_FMSZ(7) // Frame size = 8 bytes
+    | SPIx_CTARn_ASC(1) // After SCK Delay Scaler (min 50 ns) = 55.56ns
+    | SPIx_CTARn_DT(0) // Delay After Transfer Scaler (no minimum)= 27.78ns
+    | SPIx_CTARn_CSSCK(0) // PCS to SCK Delay Scaler (min 20 ns) = 27.78ns
+    | SPIx_CTARn_PBR(0) // Baud Rate Prescaler = 2
+    | SPIx_CTARn_BR(0) // Baud rate (min 50ns) = 55.56ns
+};
+
+static GFXINLINE void acquire_bus(GDisplay *g) {
+    (void) g;
+    // Only the LCD is using the SPI bus, so no need to acquire
+    // spiAcquireBus(&SPID1);
+    spiSelect(&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);
+    spiUnselect(&SPID1);
+}
+
+static GFXINLINE void init_board(GDisplay *g) {
+    (void) g;
+    palSetPadModeNamed(A0, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
+    palSetPadModeNamed(RST, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
+    palSetPadModeRaw(MOSI, ST7565_SPI_MODE);
+    palSetPadModeRaw(SLCK, ST7565_SPI_MODE);
+    palSetPadModeNamed(SS, PAL_MODE_OUTPUT_PUSHPULL);
+
+    spiInit();
+    spiStart(&SPID1, &spi1config);
+    release_bus(g);
+}
+
+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 enter_data_mode(GDisplay *g) {
+    palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
+}
+
+static GFXINLINE void enter_cmd_mode(GDisplay *g) {
+    palClearPad(ST7565_GPIOPORT, ST7565_A0_PIN);
+}
+
+
+static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
+    (void) g;
+    spiSend(&SPID1, length, data);
+}
+
+#endif /* _GDISP_LLD_BOARD_H */