Transfer st7789 into c++
This commit is contained in:
Thomas Klaehn
parent
53aa3ceda6
commit
f975a37bf3
@ -1,30 +0,0 @@
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#ifndef __ST7789_H__
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#define __ST7789_H__
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#include <stddef.h>
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#include "driver.h"
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int st7789_open(const struct driver *drv);
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int st7789_close(const struct driver *drv);
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int st7789_write(const struct driver *drv, const char *buffer, unsigned int len);
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struct st7789 {
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const struct driver *spi;
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const struct driver *dc;
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const struct driver *bl;
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const struct driver *rst;
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const struct driver *select;
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unsigned int height;
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unsigned int width;
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};
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static const struct driver_fp st7789_fp = {
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.open = st7789_open,
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.close = st7789_close,
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.read = NULL,
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.write = st7789_write,
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.ioctl = NULL,
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};
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#endif
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@ -1,33 +0,0 @@
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#include "app_util_platform.h"
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#include "nrf_gpio.h"
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#include "nrf_delay.h"
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#include "boards.h"
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#include "app_error.h"
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#include <string.h>
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#include "nrf_log.h"
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#include "nrf_log_ctrl.h"
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#include "nrf_log_default_backends.h"
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#include "board.h"
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#include "driver.h"
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int main(void)
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{
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unsigned int cnt = 0;
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APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
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NRF_LOG_DEFAULT_BACKENDS_INIT();
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drv_open(&led_1);
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drv_open(&lcd);
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NRF_LOG_INFO("SPI example started.");
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while(1) {
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char c = (cnt++ % 2) + 0x30;
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drv_write(&led_1, &c, 1);
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NRF_LOG_FLUSH();
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nrf_delay_ms(200);
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}
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}
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19
src/application/st7789_lcd/main.cc
Normal file
19
src/application/st7789_lcd/main.cc
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@ -0,0 +1,19 @@
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#include "delay.h"
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#include "platform/hal.h"
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#include "st7789.h"
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hal::Gpio lcd_reset(26);
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hal::Gpio lcd_data_command(18);
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hal::Gpio lcd_backlight(23);
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hal::Gpio lcd_chip_select(25);
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hal::Spi lcd_spi(0, 2, 3, 4, 25);
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St7789 lcd(lcd_spi, lcd_reset, lcd_data_command, lcd_backlight, lcd_chip_select);
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int main(void)
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{
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while(true) {
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delay_ms(200);
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}
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}
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192
src/st7789.c
192
src/st7789.c
@ -1,192 +0,0 @@
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#include <assert.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <unistd.h>
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#include "delay.h"
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#include "st7789.h"
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static void send_cmd(const struct driver *drv, uint8_t cmd);
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static void send_data_8bit(const struct driver *drv, uint8_t data);
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static void lcd_init(const struct driver *drv);
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static void lcd_set_windows(const struct driver *drv, uint16_t x_start, uint16_t y_start, uint16_t x_end, uint16_t y_end);
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static void lcd_clear(const struct driver *drv, uint16_t Color)
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{
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unsigned int i,j;
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struct st7789 *this = (struct st7789*)(drv->dev);
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lcd_set_windows(drv, 0, 0, 240, 240);
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drv_write(this->dc, "1", 1);
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for(i = 0; i < 240; i++) {
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for(j = 0; j < 240; j++){
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char c = (Color >> 8) & 0xff;
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drv_write(this->spi, &c, 1);
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c = Color & 0xff;
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drv_write(this->spi, &c, 1);
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}
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}
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}
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int st7789_open(const struct driver *drv)
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{
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assert(drv != NULL);
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struct st7789 *this = (struct st7789*)(drv->dev);
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drv_open(this->rst);
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drv_write(this->rst, "1", 1);
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drv_open(this->dc);
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drv_write(this->dc, "1", 1);
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drv_open(this->bl);
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drv_write(this->bl, "1", 1);
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drv_open(this->select);
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drv_write(this->select, "0", 1);
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drv_open(this->spi);
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// hard reset
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drv_write(this->rst, "0", 1);
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delay_ms(100);
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drv_write(this->rst, "1", 1);
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delay_ms(100);
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lcd_init(drv);
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lcd_clear(drv, 0x0000);
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return 0;
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}
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int st7789_close(const struct driver *drv)
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{
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assert(drv != NULL);
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struct st7789 *this = (struct st7789*)(drv->dev);
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drv_close(this->rst);
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drv_close(this->dc);
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drv_close(this->bl);
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drv_close(this->spi);
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return 0;
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}
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int st7789_write(const struct driver *drv, const char *buffer, unsigned int len)
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{
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assert(drv != NULL);
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struct st7789 *this = (struct st7789*)(drv->dev);
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uint16_t *image = (uint16_t *)buffer;
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lcd_set_windows(drv, 0, 0, this->width, this->height);
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drv_write(this->dc, "1", 1);
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for (uint16_t i = 0; i < this->height; i++) {
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drv_write(this->spi, (const char *)&image[i * this->width], len);
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}
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return len;
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}
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static void send_cmd(const struct driver *drv, uint8_t cmd)
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{
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assert(drv != NULL);
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struct st7789 *this = (struct st7789*)(drv->dev);
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drv_write(this->dc, "0", 1);
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drv_write(this->spi, (const char* )&cmd, 1);
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}
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static void send_data_8bit(const struct driver *drv, uint8_t data)
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{
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assert(drv != NULL);
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struct st7789 *this = (struct st7789*)(drv->dev);
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drv_write(this->dc, "1", 1);
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drv_write(this->spi, (const char* )&data, 1);
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}
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static void lcd_init(const struct driver *drv)
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{
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send_cmd(drv, 0x36);
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send_data_8bit(drv, 0x00);
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send_cmd(drv, 0x3A);
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send_data_8bit(drv, 0x05);
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send_cmd(drv, 0xB2);
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send_data_8bit(drv, 0x0C);
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send_data_8bit(drv, 0x0C);
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send_data_8bit(drv, 0x00);
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send_data_8bit(drv, 0x33);
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send_data_8bit(drv, 0x33);
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send_cmd(drv, 0xB7); //Gate Control
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send_data_8bit(drv, 0x35);
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send_cmd(drv, 0xBB); //VCOM Setting
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send_data_8bit(drv, 0x19);
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send_cmd(drv, 0xC0); //LCM Control
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send_data_8bit(drv, 0x2C);
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send_cmd(drv, 0xC2); //VDV and VRH Command Enable
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send_data_8bit(drv, 0x01);
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send_cmd(drv, 0xC3); //VRH Set
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send_data_8bit(drv, 0x12);
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send_cmd(drv, 0xC4); //VDV Set
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send_data_8bit(drv, 0x20);
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send_cmd(drv, 0xC6); //Frame Rate Control in Normal Mode
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send_data_8bit(drv, 0x0F);
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send_cmd(drv, 0xD0); // Power Control 1
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send_data_8bit(drv, 0xA4);
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send_data_8bit(drv, 0xA1);
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send_cmd(drv, 0xE0); //Positive Voltage Gamma Control
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send_data_8bit(drv, 0xD0);
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send_data_8bit(drv, 0x04);
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send_data_8bit(drv, 0x0D);
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send_data_8bit(drv, 0x11);
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send_data_8bit(drv, 0x13);
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send_data_8bit(drv, 0x2B);
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send_data_8bit(drv, 0x3F);
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send_data_8bit(drv, 0x54);
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send_data_8bit(drv, 0x4C);
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send_data_8bit(drv, 0x18);
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send_data_8bit(drv, 0x0D);
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send_data_8bit(drv, 0x0B);
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send_data_8bit(drv, 0x1F);
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send_data_8bit(drv, 0x23);
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send_cmd(drv, 0xE1); //Negative Voltage Gamma Control
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send_data_8bit(drv, 0xD0);
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send_data_8bit(drv, 0x04);
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send_data_8bit(drv, 0x0C);
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send_data_8bit(drv, 0x11);
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send_data_8bit(drv, 0x13);
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send_data_8bit(drv, 0x2C);
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send_data_8bit(drv, 0x3F);
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send_data_8bit(drv, 0x44);
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send_data_8bit(drv, 0x51);
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send_data_8bit(drv, 0x2F);
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send_data_8bit(drv, 0x1F);
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send_data_8bit(drv, 0x1F);
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send_data_8bit(drv, 0x20);
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send_data_8bit(drv, 0x23);
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send_cmd(drv, 0x21); //Display Inversion On
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send_cmd(drv, 0x11); //Sleep Out
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send_cmd(drv, 0x29); //Display On
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}
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static void lcd_set_windows(const struct driver *drv, uint16_t x_start, uint16_t y_start, uint16_t x_end, uint16_t y_end)
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{
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//set the X coordinates
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send_cmd(drv, 0x2A);
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send_data_8bit(drv, (x_start >> 8) & 0xFF);
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send_data_8bit(drv, x_start & 0xFF);
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send_data_8bit(drv, ((x_end - 1) >> 8) & 0xFF);
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send_data_8bit(drv, (x_end - 1) & 0xFF);
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//set the Y coordinates
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send_cmd(drv, 0x2B);
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send_data_8bit(drv, (y_start >> 8) & 0xFF);
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send_data_8bit(drv, y_start & 0xFF);
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send_data_8bit(drv, ((y_end - 1) >> 8) & 0xFF);
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send_data_8bit(drv, (y_end - 1) & 0xFF);
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send_cmd(drv, 0X2C);
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}
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152
src/st7789.cc
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152
src/st7789.cc
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@ -0,0 +1,152 @@
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#include <cstdint>
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#include "delay.h"
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#include "st7789.h"
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St7789::St7789(interfaces::SpiInterface & spi_if,
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interfaces::GpioInterface & rst,
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interfaces::GpioInterface & dc,
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interfaces::GpioInterface & bl,
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interfaces::GpioInterface & cs)
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: spi(spi_if)
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, reset(rst)
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, data_command(dc)
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, backlight(bl)
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, select(cs)
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{
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this->reset.set();
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this->data_command.set();
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this->backlight.set();
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this->select.clear();
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// hard reset
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this->reset.clear();
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delay_ms(100);
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this->reset.set();
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delay_ms(100);
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this->init();
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this->clear(0x0000);
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}
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void St7789::init()
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{
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send_cmd(0x36);
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send_data(0x00);
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send_cmd(0x3A);
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send_data(0x05);
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send_cmd(0xB2);
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send_data(0x0C);
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send_data(0x0C);
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send_data(0x00);
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send_data(0x33);
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send_data(0x33);
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send_cmd(0xB7); //Gate Control
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send_data(0x35);
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send_cmd(0xBB); //VCOM Setting
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send_data(0x19);
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send_cmd(0xC0); //LCM Control
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send_data(0x2C);
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send_cmd(0xC2); //VDV and VRH Command Enable
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send_data(0x01);
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send_cmd(0xC3); //VRH Set
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send_data(0x12);
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send_cmd(0xC4); //VDV Set
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send_data(0x20);
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send_cmd(0xC6); //Frame Rate Control in Normal Mode
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send_data(0x0F);
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send_cmd(0xD0); // Power Control 1
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send_data(0xA4);
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send_data(0xA1);
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send_cmd(0xE0); //Positive Voltage Gamma Control
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send_data(0xD0);
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send_data(0x04);
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send_data(0x0D);
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send_data(0x11);
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send_data(0x13);
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send_data(0x2B);
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send_data(0x3F);
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send_data(0x54);
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send_data(0x4C);
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send_data(0x18);
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send_data(0x0D);
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send_data(0x0B);
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send_data(0x1F);
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send_data(0x23);
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send_cmd(0xE1); //Negative Voltage Gamma Control
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send_data(0xD0);
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send_data(0x04);
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send_data(0x0C);
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send_data(0x11);
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send_data(0x13);
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send_data(0x2C);
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send_data(0x3F);
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send_data(0x44);
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send_data(0x51);
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send_data(0x2F);
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send_data(0x1F);
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send_data(0x1F);
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send_data(0x20);
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send_data(0x23);
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send_cmd(0x21); //Display Inversion On
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send_cmd(0x11); //Sleep Out
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send_cmd(0x29); //Display On
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}
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void St7789::send_cmd(uint8_t cmd)
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{
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this->data_command.clear();
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this->spi.send(&cmd, 1);
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}
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void St7789::send_data(uint8_t data)
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{
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this->data_command.set();
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this->spi.send(&data, 1);
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}
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void St7789::clear(uint16_t Color)
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{
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unsigned int i,j;
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set_windows(0, 0, 240, 240);
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this->data_command.set();
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for(i = 0; i < 240; i++) {
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for(j = 0; j < 240; j++){
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uint8_t c = (Color >> 8) & 0xff;
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this->spi.send(&c, 1);
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c = Color & 0xff;
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this->spi.send(&c, 1);
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}
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}
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}
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void St7789::set_windows(uint16_t x_start, uint16_t y_start, uint16_t x_end, uint16_t y_end)
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{
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//set the X coordinates
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send_cmd(0x2A);
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send_data((x_start >> 8) & 0xFF);
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send_data(x_start & 0xFF);
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send_data(((x_end - 1) >> 8) & 0xFF);
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send_data((x_end - 1) & 0xFF);
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//set the Y coordinates
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send_cmd(0x2B);
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send_data((y_start >> 8) & 0xFF);
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send_data(y_start & 0xFF);
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send_data(((y_end - 1) >> 8) & 0xFF);
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send_data((y_end - 1) & 0xFF);
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send_cmd(0X2C);
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}
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31
src/st7789.h
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31
src/st7789.h
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@ -0,0 +1,31 @@
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#ifndef __ST7789_H__
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#define __ST7789_H__
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#include <cstdint>
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#include "gpio_interface.h"
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#include "spi_interface.h"
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class St7789
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{
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public:
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St7789(interfaces::SpiInterface &,
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interfaces::GpioInterface &,
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interfaces::GpioInterface &,
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interfaces::GpioInterface &,
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interfaces::GpioInterface &);
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private:
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interfaces::SpiInterface & spi;
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interfaces::GpioInterface & reset;
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interfaces::GpioInterface & data_command;
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interfaces::GpioInterface & backlight;
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interfaces::GpioInterface & select;
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void init();
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void send_cmd(uint8_t);
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void send_data(uint8_t);
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void clear(uint16_t Color);
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void set_windows(uint16_t x_start, uint16_t y_start, uint16_t x_end, uint16_t y_end);
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};
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#endif
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