control spped

Author: htynkn

bsp/gd32/arm/gd32e230-lckfb/board/Kconfig

@@ -150,9 +150,31 @@ menu "On-chip Peripheral Drivers"
                     bool "Enable I2C0"
                     default y
 
+                config BSP_HW_I2C0_CLOCK_SPEED
+                    int "I2C0 Clock Speed (Hz)"
+                    depends on BSP_USING_HW_I2C0
+                    range 100000 1000000
+                    default 400000
+                    help
+                      Set the I2C0 clock speed in Hz.
+                      Standard mode: 100000 (100KHz)
+                      Fast mode: 400000 (400KHz)
+                      Fast mode plus: 1000000 (1MHz)
+                
                 config BSP_USING_HW_I2C1
                     bool "Enable I2C1"
                     default n
+                
+                config BSP_HW_I2C1_CLOCK_SPEED
+                    int "I2C1 Clock Speed (Hz)"
+                    depends on BSP_USING_HW_I2C1
+                    range 100000 1000000
+                    default 400000
+                    help
+                      Set the I2C1 clock speed in Hz.
+                      Standard mode: 100000 (100KHz)
+                      Fast mode: 400000 (400KHz)
+                      Fast mode plus: 1000000 (1MHz)
             endif
         menuconfig BSP_USING_I2C0
             bool "Enable I2C0 BUS (software simulation)"

bsp/gd32/arm/libraries/gd32_drivers/drv_hw_i2c.c

@@ -25,12 +25,13 @@ static const struct gd32_i2c_config i2c_configs[] =
         .scl_clk = RCU_GPIOA,
         .scl_port = GPIOA,
         .scl_pin = GPIO_PIN_9,
-        .scl_af = GPIO_AF_1, 
+        .scl_af = GPIO_AF_4, 
         .sda_clk = RCU_GPIOA,
         .sda_port = GPIOA,
         .sda_pin = GPIO_PIN_10,
-        .sda_af = GPIO_AF_1, 
+        .sda_af = GPIO_AF_4, 
 
+        .i2c_clock_hz = BSP_HW_I2C0_CLOCK_SPEED,
         .device_name = "i2c0",
     },
 #endif
@@ -47,11 +48,11 @@ static const struct gd32_i2c_config i2c_configs[] =
         .sda_port = GPIOB,
         .sda_pin = GPIO_PIN_11,
         .sda_af = GPIO_AF_1, 
+        .i2c_clock_hz = BSP_HW_I2C1_CLOCK_SPEED,
         .device_name = "i2c1",
     },
 #endif
 };
-};
 
 static struct gd32_i2c i2c_objs[sizeof(i2c_configs) / sizeof(i2c_configs[0])];
 
@@ -65,19 +66,17 @@ static rt_ssize_t gd32_i2c_master_xfer(struct rt_i2c_bus_device *bus,
     rt_uint32_t i;
     rt_err_t ret = RT_EOK;
 
-    /* 等待总线空闲 */
     while (i2c_flag_get(i2c_periph, I2C_FLAG_I2CBSY));
 
     for (i = 0; i < num; i++)
     {
         struct rt_i2c_msg *msg = &msgs[i];
         rt_uint16_t slave_addr = msg->addr;
 
-        /* 发送起始信号 */
         i2c_start_on_bus(i2c_periph);
         while (!i2c_flag_get(i2c_periph, I2C_FLAG_SBSEND));
 
-        if (msg->flags & RT_I2C_RD) /* 读操作 */
+        if (msg->flags & RT_I2C_RD)
         {
             i2c_master_addressing(i2c_periph, slave_addr << 1, I2C_RECEIVER);
         }
@@ -89,7 +88,7 @@ static rt_ssize_t gd32_i2c_master_xfer(struct rt_i2c_bus_device *bus,
         while (!i2c_flag_get(i2c_periph, I2C_FLAG_ADDSEND));
         i2c_flag_clear(i2c_periph, I2C_FLAG_ADDSEND);
 
-        if (msg->flags & RT_I2C_RD) /* 读数据 */
+        if (msg->flags & RT_I2C_RD)
         {
             if (msg->len == 1)
             {
@@ -150,11 +149,7 @@ int rt_hw_i2c_init(void)
 
         i2c_obj->config = config;
 
-        /*
-         * TODO: 从 board.h 获取时钟频率, 此处为示例
-         * 您可以在板级配置中定义 I2C0_CLOCK_HZ, I2C1_CLOCK_HZ
-         */
-        i2c_obj->i2c_clock_hz = 100000; // 默认为 100KHz
+        i2c_obj->i2c_clock_hz = config->i2c_clock_hz;
 
         rcu_periph_clock_enable(config->periph_clk);
         rcu_periph_clock_enable(config->scl_clk);

bsp/gd32/arm/libraries/gd32_drivers/drv_hw_i2c.h

@@ -25,10 +25,10 @@ struct gd32_i2c_config
     rt_uint32_t sda_pin;       
     rt_uint32_t sda_af;        
 
+    rt_uint32_t i2c_clock_hz;  /* I2C clock frequency in Hz */
     const char *device_name;   
 };
 
-/* GD32 硬件 I2C 总线设备结构体 */
 struct gd32_i2c
 {
     struct rt_i2c_bus_device parent;