feat: Add POC ST7586 LCD controller driver service

services/Kconfig

@@ -204,6 +204,10 @@ menu "High level device drivers"
 		depends on SERVICE_STM32_SPI
 		bool "ADI ADXL355 3 axis accelerometer"
 		default n
+
+	config SERVICE_LCD_ST7586
+		bool "ST7586 LCD driver"
+		default n
 endmenu
 
 menu "Filesystem and memory management services"

services/lcd-st7586/SConscript

@@ -0,0 +1,6 @@
+Import("env")
+Import("objs")
+Import("conf")
+
+if conf["SERVICE_LCD_ST7586"] == "y":
+	objs.append(env.Object(File(Glob("*.c"))))

services/lcd-st7586/lcd-st7586.c

@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * ST7586 LCD driver service
+ *
+ * Copyright (c) 2024, Marek Koza (qyx@krtko.org)
+ * All rights reserved.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <main.h>
+#include <interfaces/spi.h>
+
+#include "lcd-st7586.h"
+
+#define MODULE_NAME "lcd-st7586"
+
+
+/***************************************************************************************************
+ * Framebuffer interface API
+ ***************************************************************************************************/
+
+
+//static const struct power_vmt generic_power_vmt = {
+	//.enable = generic_power_enable,
+	//.set_voltage = generic_power_set_voltage,
+//};
+
+
+/*
+static void lcd_send_spi(uint8_t data) {
+	spi_send8(SPI1, data);
+	spi_read8(SPI1);
+}
+
+
+static void lcd_write(uint8_t v) {
+	gpio_clear(LCD_CS_PORT, LCD_CS_PIN);
+	lcd_send_spi(v);
+	gpio_set(LCD_CS_PORT, LCD_CS_PIN);
+}
+
+
+static void lcd_write_buf(uint8_t *buf, size_t len) {
+	gpio_clear(LCD_CS_PORT, LCD_CS_PIN);
+	while (len) {
+		lcd_send_spi(*buf);
+		buf++;
+		len--;
+	}
+	gpio_set(LCD_CS_PORT, LCD_CS_PIN);
+}
+*/
+
+static lcd_st7586_ret_t lcd_reset(LcdSt7586 *self) {
+	gpio_set(self->reset_port, self->reset_pin);
+	vTaskDelay(10);
+	gpio_clear(self->reset_port, self->reset_pin);
+	vTaskDelay(10);
+	gpio_set(self->reset_port, self->reset_pin);
+	vTaskDelay(10);
+}
+
+
+static lcd_st7586_ret_t lcd_send_command(LcdSt7586 *self, uint8_t reg) {
+	gpio_clear(self->cd_port, self->cd_pin);
+
+	self->spi->vmt->select(self->spi);
+	self->spi->vmt->send(self->spi, &reg, sizeof(reg));
+	self->spi->vmt->deselect(self->spi);
+}
+
+
+static lcd_st7586_ret_t lcd_send_data(LcdSt7586 *self, uint8_t reg) {
+	gpio_set(self->cd_port, self->cd_pin);
+
+	self->spi->vmt->select(self->spi);
+	self->spi->vmt->send(self->spi, &reg, sizeof(reg));
+	self->spi->vmt->deselect(self->spi);
+}
+
+
+static lcd_st7586_ret_t lcd_send_data_buf(LcdSt7586 *self, const uint8_t *buf, size_t len) {
+	gpio_set(self->cd_port, self->cd_pin);
+
+	self->spi->vmt->select(self->spi);
+	self->spi->vmt->send(self->spi, buf, len);
+	self->spi->vmt->deselect(self->spi);
+}
+
+
+static lcd_st7586_ret_t lcd_init_controller(LcdSt7586 *self) {
+	lcd_reset(self);
+
+        lcd_send_command(self, 0x11); // Sleep Out
+        lcd_send_command(self, 0x28); // Display OFF
+        vTaskDelay(10);
+        lcd_send_command(self, 0xC0); // Vop = B9h
+        lcd_send_data(self, 0x40);
+        lcd_send_data(self, 0x01);
+        lcd_send_command(self, 0xC3); // BIAS = 1/14
+        lcd_send_data(self, 0x00);
+        lcd_send_command(self, 0xC4); // Booster = x8
+        lcd_send_data(self, 0x07);
+        lcd_send_command(self, 0xD0); // Enable Analog Circuit
+        lcd_send_data(self, 0x1D);
+        lcd_send_command(self, 0xB5); // N-Line = 0
+        lcd_send_data(self, 0x00);
+        lcd_send_command(self, 0x38); // Grayscale mode
+        lcd_send_command(self, 0x3A); // Enable DDRAM Interface
+        lcd_send_data(self, 0x02);
+        lcd_send_command(self, 0x36); // Scan Direction Setting
+        lcd_send_data(self, 0xc0);   //COM:C160--C1   SEG: SEG384-SEG1
+        lcd_send_command(self, 0xB0); // Duty Setting
+        lcd_send_data(self, 0x9F);
+
+        lcd_send_command(self, 0x20); // Display Inversion OFF
+        lcd_send_command(self, 0x2A); // Column Address Setting
+        lcd_send_data(self, 0x00); // SEG0 -> SEG384
+        lcd_send_data(self, 0x00);
+        lcd_send_data(self, 0x00);
+        lcd_send_data(self, 0x7F);
+        lcd_send_command(self, 0x2B); // Row Address Setting
+        lcd_send_data(self, 0x00); // COM0 -> COM160
+        lcd_send_data(self, 0x00);
+        lcd_send_data(self, 0x00);
+        lcd_send_command(self, 0x9F);
+//      display_white(); // Clear whole DDRAM by ¡°0¡± (384 x 160 x 2)
+
+        lcd_send_command(self, 0x29); // Display ON
+}
+
+/*
+static void lcd_black(void)  {
+	uint8_t data[121];
+	for (size_t i = 0; i < 120; i++) {
+		data[i] = 0xff;
+	}
+
+	lcd_send_command(0x2c);
+	for(uint32_t i = 0; i < 170; i++) {
+		lcd_send_data_buf(data, 121);
+	}
+}
+*/
+
+static void lcd_pattern(LcdSt7586 *self)  {
+	uint8_t data[128] = {0};
+
+	lcd_send_command(self, 0x2c);
+	for(uint32_t i = 0; i < 160; i++) {
+		for (size_t j = 0; j < 128; j++) {
+			data[j] = ((i % 4) << 6) | ((i % 4) << 3);
+		}
+		lcd_send_data_buf(self, data, 128);
+	}
+}
+
+
+lcd_st7586_ret_t lcd_st7586_init(LcdSt7586 *self, SpiDev *spi, uint32_t reset_port, uint32_t reset_pin, uint32_t cd_port, uint32_t cd_pin) {
+	memset(self, 0, sizeof(LcdSt7586));
+
+	//self->power.parent = self;
+	//self->power.vmt = &generic_power_vmt;
+	self->spi = spi;
+	self->reset_port = reset_port;
+	self->reset_pin = reset_pin;
+	self->cd_port = cd_port;
+	self->cd_pin = cd_pin;
+
+	lcd_init_controller(self);
+	lcd_pattern(self);
+
+	u_log(system_log, LOG_TYPE_INFO, U_LOG_MODULE_PREFIX("initialized"));
+	return LCD_ST7586_RET_OK;
+}
+
+
+lcd_st7586_ret_t lcd_st7586_free(LcdSt7586 *self) {
+	(void)self;
+	return LCD_ST7586_RET_OK;
+}
+
+
+

services/lcd-st7586/lcd-st7586.h

@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * ST7586 LCD driver service
+ *
+ * Copyright (c) 2024, Marek Koza (qyx@krtko.org)
+ * All rights reserved.
+ */
+
+#pragma once
+
+#include <main.h>
+#include <interfaces/spi.h>
+
+typedef enum  {
+	LCD_ST7586_RET_OK = 0,
+	LCD_ST7586_RET_FAILED,
+} lcd_st7586_ret_t;
+
+
+typedef struct lcs_st7586 {
+	uint32_t reset_port;
+	uint32_t reset_pin;
+	uint32_t cd_port;
+	uint32_t cd_pin;
+
+	SpiDev *spi;
+
+} LcdSt7586;
+
+
+lcd_st7586_ret_t lcd_st7586_init(LcdSt7586 *self, SpiDev *spi, uint32_t reset_port, uint32_t reset_pin, uint32_t cd_port, uint32_t cd_pin);
+lcd_st7586_ret_t lcd_st7586_free(LcdSt7586 *self);
+