driver: st7565

firmware/shared_libs/drivers/st7565/st7565.c

@@ -0,0 +1,90 @@
+#include "main.h"
+#include "display_gfx.h"
+#include "st7565.h"
+// #include "spi.h"
+#include "string.h"
+
+uint8_t st7565_buffor[ST7565_BUFFER_SIZE];
+
+void ST7565_SendCommand(uint8_t data)
+{
+    HAL_GPIO_WritePin(ST7565_A0_GPIO_Port, ST7565_A0_Pin, GPIO_PIN_RESET);
+
+    HAL_SPI_Transmit(&hspi3, &data, 1, HAL_MAX_DELAY);
+}
+
+void ST7565_SendData(uint8_t *data, uint16_t size)
+{
+    HAL_GPIO_WritePin(ST7565_A0_GPIO_Port, ST7565_A0_Pin, GPIO_PIN_SET);
+
+    HAL_SPI_Transmit(&hspi3, data, size, HAL_MAX_DELAY);
+}
+
+void ST7565_Init(GFX_display_t *disp)
+{
+    disp->width = ST7565_WIDTH;
+    disp->height = ST7565_HEIGHT;
+    disp->buffor = st7565_buffor;
+    // toggle RST low to reset; CS low so it'll listen to us
+    HAL_GPIO_WritePin(ST7565_CS_GPIO_Port, ST7565_CS_Pin, GPIO_PIN_RESET);
+
+    HAL_GPIO_WritePin(ST7565_RST_GPIO_Port, ST7565_RST_Pin, GPIO_PIN_RESET);
+    HAL_Delay(500);
+    HAL_GPIO_WritePin(ST7565_RST_GPIO_Port, ST7565_RST_Pin, GPIO_PIN_SET);
+
+    // LCD bias select
+    ST7565_SendCommand(CMD_SET_BIAS_7);
+    // ADC select
+    ST7565_SendCommand(CMD_SET_ADC_REVERSE);
+    // SHL select
+    ST7565_SendCommand(CMD_SET_COM_NORMAL);
+    // Initial display line
+    ST7565_SendCommand(CMD_SET_DISP_START_LINE);
+
+    // turn on voltage converter (VC=1, VR=0, VF=0)
+    ST7565_SendCommand(CMD_SET_POWER_CONTROL | 0x4);
+    // wait for 50% rising
+    HAL_Delay(50);
+
+    // turn on voltage regulator (VC=1, VR=1, VF=0)
+    ST7565_SendCommand(CMD_SET_POWER_CONTROL | 0x6);
+    // wait >=50ms
+    HAL_Delay(50);
+
+    // turn on voltage follower (VC=1, VR=1, VF=1)
+    ST7565_SendCommand(CMD_SET_POWER_CONTROL | 0x7);
+    // wait
+    HAL_Delay(10);
+
+    // set lcd operating voltage (regulator resistor, ref voltage resistor)
+    ST7565_SendCommand(CMD_SET_RESISTOR_RATIO | 0x6);
+
+    ST7565_SendCommand(CMD_DISPLAY_ON);
+    ST7565_SendCommand(CMD_SET_ALLPTS_NORMAL);
+    ST7565_SendCommand(CMD_SET_VOLUME_FIRST);
+    ST7565_SendCommand(CMD_SET_VOLUME_SECOND | (0x00 & 0x3f));
+
+    // initial display line
+    // set page address
+    // set column address
+    // write display data
+
+    // set up a bounding box for screen updates
+
+    // updateBoundingBox(0, 0, LCDWIDTH - 1, LCDHEIGHT - 1);
+    HAL_GPIO_WritePin(ST7565_CS_GPIO_Port, ST7565_CS_Pin, GPIO_PIN_SET);
+}
+
+void ST7565_DisplayAll(void)
+{
+    HAL_GPIO_WritePin(ST7565_CS_GPIO_Port, ST7565_CS_Pin, GPIO_PIN_RESET);
+    for (uint8_t p = 0; p < 8; p++)
+    {
+        ST7565_SendCommand(CMD_SET_PAGE | p);
+        ST7565_SendCommand(CMD_SET_COLUMN_UPPER | 0);
+        ST7565_SendCommand(CMD_SET_COLUMN_LOWER | 0);
+
+        ST7565_SendData(&st7565_buffor[128 * p], 128);
+    }
+    HAL_GPIO_WritePin(ST7565_CS_GPIO_Port, ST7565_CS_Pin, GPIO_PIN_SET);
+}

firmware/shared_libs/drivers/st7565/st7565.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#define ST7565_WIDTH 128
+#define ST7565_HEIGHT 64
+#define ST7565_BUFFER_SIZE ST7565_WIDTH *ST7565_HEIGHT / 8
+
+#define CMD_DISPLAY_OFF 0xAE
+#define CMD_DISPLAY_ON 0xAF
+
+#define CMD_SET_DISP_START_LINE 0x40
+#define CMD_SET_PAGE 0xB0
+
+#define CMD_SET_COLUMN_UPPER 0x10
+#define CMD_SET_COLUMN_LOWER 0x00
+
+#define CMD_SET_ADC_NORMAL 0xA0
+#define CMD_SET_ADC_REVERSE 0xA1
+
+#define CMD_SET_DISP_NORMAL 0xA6
+#define CMD_SET_DISP_REVERSE 0xA7
+
+#define CMD_SET_ALLPTS_NORMAL 0xA4
+#define CMD_SET_ALLPTS_ON 0xA5
+#define CMD_SET_BIAS_9 0xA2
+#define CMD_SET_BIAS_7 0xA3
+
+#define CMD_RMW 0xE0
+#define CMD_RMW_CLEAR 0xEE
+#define CMD_INTERNAL_RESET 0xE2
+#define CMD_SET_COM_NORMAL 0xC0
+#define CMD_SET_COM_REVERSE 0xC8
+#define CMD_SET_POWER_CONTROL 0x28
+#define CMD_SET_RESISTOR_RATIO 0x20
+#define CMD_SET_VOLUME_FIRST 0x81
+#define CMD_SET_VOLUME_SECOND 0
+#define CMD_SET_STATIC_OFF 0xAC
+#define CMD_SET_STATIC_ON 0xAD
+#define CMD_SET_STATIC_REG 0x0
+#define CMD_SET_BOOSTER_FIRST 0xF8
+#define CMD_SET_BOOSTER_234 0
+#define CMD_SET_BOOSTER_5 1
+#define CMD_SET_BOOSTER_6 3
+#define CMD_NOP 0xE3
+#define CMD_TEST 0xF0
+
+void ST7565_Init(GFX_display_t *disp);
+void ST7565_DisplayAll(void);