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iqyxiqyx
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feat: Add POC ST7586 LCD controller driver service
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‎services/Kconfig

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

‎services/lcd-st7586/SConscript

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Import("env")
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Import("objs")
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Import("conf")
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if conf["SERVICE_LCD_ST7586"] == "y":
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objs.append(env.Object(File(Glob("*.c"))))

‎services/lcd-st7586/lcd-st7586.c

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

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