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idf的spi还有问题

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This commit is contained in:
kevin
2025-12-31 02:04:09 +08:00
parent 5f53220606
commit fb653cb545
7 changed files with 297 additions and 11 deletions
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espidfcode/main/lcd.c
+155
View File
@@ -0,0 +1,155 @@
#include "lcd.h"
static const char *TAG = "LCD";
/******************************************************************************
函数说明：设置起始和结束地址
入口数据：x1,x2 设置列的起始和结束地址
y1,y2 设置行的起始和结束地址
返回值： 无
******************************************************************************/
void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2)
{
#if USE_HORIZONTAL==0
lcd_spi_reg(0x2a);//列地址设置
lcd_spi_write8(x1);
lcd_spi_write8(x2);
lcd_spi_reg(0x2b);//行地址设置
lcd_spi_write8(y1);
lcd_spi_write8(y2);
lcd_spi_reg(0x2c);//储存器写
#elif USE_HORIZONTAL==1
lcd_spi_reg(0x2a);//列地址设置
lcd_spi_write8(x1);
lcd_spi_write8(x2);
lcd_spi_reg(0x2b);//行地址设置
lcd_spi_write8(y1+80);
lcd_spi_write8(y2+80);
lcd_spi_reg(0x2c);//储存器写
#elif USE_HORIZONTAL==2
lcd_spi_reg(0x2a);//列地址设置
lcd_spi_write8(x1);
lcd_spi_write8(x2);
lcd_spi_reg(0x2b);//行地址设置
lcd_spi_write8(y1);
lcd_spi_write8(y2);
lcd_spi_reg(0x2c);//储存器写
#elif USE_HORIZONTAL==3
lcd_spi_reg(0x2a);//列地址设置
lcd_spi_write8(x1+80);
lcd_spi_write8(x2+80);
lcd_spi_reg(0x2b);//行地址设置
lcd_spi_write8(y1);
lcd_spi_write8(y2);
lcd_spi_reg(0x2c);//储存器写
#endif
}
void lcd_init(){
ESP_LOGI(TAG,"等待初始化LCD");
vTaskDelay(25); //
ESP_LOGI(TAG,"初始化LCD");
lcd_spi_reg(0x36);
if(USE_HORIZONTAL==0)lcd_spi_write8(0x00);
else if(USE_HORIZONTAL==1)lcd_spi_write8(0xC0);
else if(USE_HORIZONTAL==2)lcd_spi_write8(0x70);
else lcd_spi_write8(0xA0);
lcd_spi_reg(0x3A);
lcd_spi_write8(0x05);
lcd_spi_reg(0xB2);
lcd_spi_write8(0x0C);
lcd_spi_write8(0x0C);
lcd_spi_write8(0x00);
lcd_spi_write8(0x33);
lcd_spi_write8(0x33);
lcd_spi_reg(0xB7);
lcd_spi_write8(0x35);
lcd_spi_reg(0xBB);
lcd_spi_write8(0x19);
lcd_spi_reg(0xC0);
lcd_spi_write8(0x2C);
lcd_spi_reg(0xC2);
lcd_spi_write8(0x01);
lcd_spi_reg(0xC3);
lcd_spi_write8(0x12);
lcd_spi_reg(0xC4);
lcd_spi_write8(0x20);
lcd_spi_reg(0xC6);
lcd_spi_write8(0x0F);
lcd_spi_reg(0xD0);
lcd_spi_write8(0xA4);
lcd_spi_write8(0xA1);
lcd_spi_reg(0xE0);
lcd_spi_write8(0xD0);
lcd_spi_write8(0x04);
lcd_spi_write8(0x0D);
lcd_spi_write8(0x11);
lcd_spi_write8(0x13);
lcd_spi_write8(0x2B);
lcd_spi_write8(0x3F);
lcd_spi_write8(0x54);
lcd_spi_write8(0x4C);
lcd_spi_write8(0x18);
lcd_spi_write8(0x0D);
lcd_spi_write8(0x0B);
lcd_spi_write8(0x1F);
lcd_spi_write8(0x23);
lcd_spi_reg(0xE1);
lcd_spi_write8(0xD0);
lcd_spi_write8(0x04);
lcd_spi_write8(0x0C);
lcd_spi_write8(0x11);
lcd_spi_write8(0x13);
lcd_spi_write8(0x2C);
lcd_spi_write8(0x3F);
lcd_spi_write8(0x44);
lcd_spi_write8(0x51);
lcd_spi_write8(0x2F);
lcd_spi_write8(0x1F);
lcd_spi_write8(0x1F);
lcd_spi_write8(0x20);
lcd_spi_write8(0x23);
lcd_spi_reg(0x21);
lcd_spi_reg(0x11);
vTaskDelay(12);
lcd_spi_reg(0x29);
ESP_LOGI(TAG,"初始化LCD完成");
}
void LCD_Clear(uint16_t Color)
{
uint16_t i,j;
LCD_Address_Set(0,0,LCD_WW-1,LCD_HH-1);
for(i=0;i<LCD_WW;i++)
{
for (j=0;j<LCD_HH;j++)
{
lcd_spi_write16(Color);
}
}
}
espidfcode/main/lcd.h
+18
View File
@@ -0,0 +1,18 @@
#ifndef LCD_H
#define LCD_H
#include <stdio.h>
#include <inttypes.h>
#include "esp_log.h"
#include "spi.h"
#define USE_HORIZONTAL 0 //设置横屏或者竖屏显示 0或1为竖屏 2或3为横屏
#define LCD_WW 240
#define LCD_HH 320
void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2);
void lcd_init();
void LCD_Clear(uint16_t Color);
#endif
espidfcode/main/spi.c
+91 -11
View File
@@ -1,15 +1,8 @@
#include "spi.h"
#include "driver/spi_master.h"
#include "esp_log.h"
#define VSPI_MISO -1 //接收引脚不使用，仅发送
#define VSPI_MOSI 3
#define VSPI_SCLK 2
#define LCD_CS 7
#define LCD_DS 6
static const char *TAG = "SPI_2";
@@ -17,6 +10,39 @@ spi_device_handle_t lcd_spi;
void spi_init()
{
ESP_LOGI(TAG, "配置GPIO");
// 1. 配置GPIO
gpio_config_t io_conf = {
.pin_bit_mask = (1ULL << LCD_DS), // LCD_DS
.mode = GPIO_MODE_OUTPUT, // 输出模式
.pull_up_en = GPIO_PULLUP_DISABLE, //
.pull_down_en = GPIO_PULLDOWN_DISABLE, //
.intr_type = GPIO_INTR_DISABLE // 禁用中断
};
// 2. 应用配置
gpio_config(&io_conf);
// io_conf.pin_bit_mask=LCD_CS;
// gpio_config(&io_conf);
// io_conf.pin_bit_mask=VSPI_SCLK;
// gpio_config(&io_conf);
// io_conf.pin_bit_mask=VSPI_MOSI;
// gpio_config(&io_conf);
// 3. 设置初始电平
gpio_set_level(LCD_DS, 0); // 输出低电平
// gpio_set_level(LCD_CS,0);
// gpio_set_level(VSPI_SCLK,0);
// gpio_set_level(VSPI_MOSI,0);
ESP_LOGI(TAG, "配置GPIO完成");
ESP_LOGI(TAG,"初始化SPI IO总线");
esp_err_t ret;
@@ -31,7 +57,7 @@ void spi_init()
};
// 2. 初始化 SPI 总线
ret = spi_bus_initialize(SPI2_HOST, &buscfg, SPI_DMA_CH_AUTO);
ret = spi_bus_initialize(SPI2_HOST, &buscfg,SPI_DMA_DISABLED );
if (ret != ESP_OK) {
ESP_LOGE(TAG, "SPI2 IO总线初始化失败");
return;
@@ -43,11 +69,11 @@ void spi_init()
spi_device_interface_config_t devcfg = {
.mode = 0, // SPI 模式 0
.clock_speed_hz = 80 * 1000 * 1000, //
.clock_speed_hz = 40 * 1000 * 1000, //
.spics_io_num = LCD_CS,
.queue_size = 7, // 队列深度
.command_bits = 8, // 命令 8 位
.address_bits = 8,
.flags = 0, // 可选标志
};
ret = spi_bus_add_device(SPI2_HOST, &devcfg, &lcd_spi);
@@ -56,7 +82,61 @@ void spi_init()
return;
}
}
// SPI 写数据
esp_err_t lcd_spi_write8(uint8_t data) {
spi_transaction_t trans = {
.length = 8, // 数据位数
.tx_buffer = &data, // 发送缓冲区
.rx_buffer = NULL, // 不接收
};
return spi_device_transmit(lcd_spi, &trans);
}
// SPI 写数据
esp_err_t lcd_spi_write16(uint16_t data) {
spi_transaction_t trans = {
.length = 16, // 数据位数
.tx_buffer = &data, // 发送缓冲区
.rx_buffer = NULL, // 不接收
};
return spi_device_transmit(lcd_spi, &trans);
}
// SPI 写命令
esp_err_t lcd_spi_reg(uint8_t data) {
esp_err_t err;
gpio_set_level(LCD_DS, 0);
err=lcd_spi_write8(data);
gpio_set_level(LCD_DS, 1);
if (err != ESP_OK) {
ESP_LOGE(TAG, "命令发送失败");
}
return err;
}
void lcd_ds_test()
{
esp_err_t err;
static uint8_t this_flag=0;
if(this_flag)
{
this_flag=0;
err=gpio_set_level(LCD_DS, 0);
}else{
this_flag=1;
err=gpio_set_level(LCD_DS, 1);
}
if (err != ESP_OK) {
ESP_LOGE(TAG, "GPIO失败");
}
}
espidfcode/main/spi.h
+26
View File
@@ -1,6 +1,32 @@
#ifndef SPI_H
#define SPI_H
#include <stdio.h>
#include <inttypes.h>
#include "driver/gpio.h"
#include "driver/spi_master.h"
#include "esp_log.h"
#include "esp_system.h"
#define VSPI_MISO -1 //接收引脚不使用，仅发送
#define VSPI_MOSI 3
#define VSPI_SCLK 2
#define LCD_CS 7
#define LCD_DS 6
void spi_init();
// SPI 写数据
esp_err_t lcd_spi_write8(uint8_t data);
// SPI 写数据
esp_err_t lcd_spi_write16(uint16_t data);
// SPI 写命令
esp_err_t lcd_spi_reg(uint8_t data);
void lcd_ds_test();
#endif /* SPI_H */
espidfcode/main/the_main.c
+6
View File
@@ -16,6 +16,8 @@
#include "spi.h"
#include "lcd.h"
static const char *TAG = "SYS";
void app_main(void)
@@ -50,9 +52,13 @@ void app_main(void)
ESP_LOGI(TAG,"复位原因: %d\n", esp_reset_reason());
spi_init();
lcd_init();
LCD_Clear(0x1234);
while(1){
//LCD_Clear(rand());
// lcd_ds_test();
vTaskDelay(1); // 必须让出CPU
}