Signed-off-by: 吴文峰 <kevin@lmve.net>

2025-12-30 23:14:11 +08:00
parent 2511afe17a
commit 31b77f712c
25 changed files with 499 additions and 0 deletions
@@ -0,0 +1,62 @@
+#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";
+
+spi_device_handle_t lcd_spi;
+
+void spi_init()
+{
+    ESP_LOGI(TAG,"初始化SPI IO总线");
+    esp_err_t ret;
+    
+    // 1. SPI 总线配置
+    spi_bus_config_t buscfg = {
+        .miso_io_num = VSPI_MISO,      // MISO 引脚
+        .mosi_io_num = VSPI_MOSI,      // MOSI 引脚
+        .sclk_io_num = VSPI_SCLK,      // 时钟引脚
+        .quadwp_io_num = -1,    // 不使用 QWP
+        .quadhd_io_num = -1,    // 不使用 QHD
+        .max_transfer_sz = 4096, // 最大传输大小
+    };
+    
+    // 2. 初始化 SPI 总线
+    ret = spi_bus_initialize(SPI2_HOST, &buscfg, SPI_DMA_CH_AUTO);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "SPI2 IO总线初始化失败");
+        return;
+    }
+
+    ESP_LOGI(TAG,"SPI IO总线初始化成功");
+
+    ESP_LOGI(TAG,"挂载设备片选IO");
+
+    spi_device_interface_config_t devcfg = {
+        .mode = 0,                    // SPI 模式 0
+        .clock_speed_hz = 80 * 1000 * 1000, // 
+        .spics_io_num = LCD_CS,
+        .queue_size = 7,              // 队列深度
+        .command_bits = 8,            // 命令 8 位
+        .address_bits = 8,            
+    };
+
+    ret = spi_bus_add_device(SPI2_HOST, &devcfg, &lcd_spi);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "挂载设备片选IO失败");
+        return;
+    }
+
+}
+
+
+