generated from hulk/gd32e23x_template
unfunction
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@ -57,8 +57,8 @@ typedef enum {
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void I2C_config(void);
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void I2C_scan(void);
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uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value);
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void LDC1612_read_sensor_infomation(void);
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int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data);
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@ -1,5 +1,5 @@
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# 连接cmsis-dap(喝粥)
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; interface cmsis-dap
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interface cmsis-dap
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source [find interface/cmsis-dap.cfg]
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# 选择SWD
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@ -7,3 +7,8 @@ transport select swd
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# 加载gd32e23x.cfg
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source [find target/gd32e23x.cfg]
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; set CHIPNAME gd32e23x
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;
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; reset_config srst_only
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adapter speed 500
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208
src/LDC1612.c
208
src/LDC1612.c
@ -26,18 +26,24 @@ void I2C_config(void) {
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i2c_ack_config(I2C0, I2C_ACK_ENABLE);
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}
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void LDC1612_Init(void) {
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uint8_t RCOUNT0_ALL[3]={SET_CONVERSION_TIME_REG_START,0x05,0x36};//csdn
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uint8_t SETTLECOUNT0_ALL[3]={SET_LC_STABILIZE_REG_START,0x00,0x0a};
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uint8_t CLOCK_DIVIDERS0_ALL[3]={SET_FREQ_REG_START,0x10,0x02};
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uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_REG,0x00,0x00};
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uint8_t MUX_CONFIG_ALL[3]={MUL_CONFIG_REG,0x82,0x0c};
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uint8_t DRIVE_CURRENT0_ALL[3]={SET_DRIVER_CURRENT_REG,0x90,0x00};
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uint8_t CONFIG_ALL[3]={SENSOR_CONFIG_REG,0x14,0x01};//csdn
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}
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// void LDC1612_Init(void) {
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// uint8_t RCOUNT0_ALL[3]={SET_CONVERSION_TIME_REG_START,0x05,0x36};//csdn
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// uint8_t SETTLECOUNT0_ALL[3]={SET_LC_STABILIZE_REG_START,0x00,0x0a};
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// uint8_t CLOCK_DIVIDERS0_ALL[3]={SET_FREQ_REG_START,0x10,0x02};
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// uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_REG,0x00,0x00};
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// uint8_t MUX_CONFIG_ALL[3]={MUL_CONFIG_REG,0x82,0x0c};
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// uint8_t DRIVE_CURRENT0_ALL[3]={SET_DRIVER_CURRENT_REG,0x90,0x00};
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// uint8_t CONFIG_ALL[3]={SENSOR_CONFIG_REG,0x14,0x01};//csdn
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//
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// }
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/**
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* @brief 扫描I2C总线,查找连接的设备
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*
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* 该函数会扫描I2C总线上的所有地址(1到126),并尝试与每个地址进行通信。
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* 如果在某个地址上发现了设备,则会打印出该设备的地址。
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* 最后会打印出找到的设备总数。
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*/
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void I2C_scan(void) {
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uint32_t timeout;
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uint8_t address;
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@ -91,99 +97,101 @@ void I2C_scan(void) {
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}
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}
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/**
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* @brief 读取16位I2C数据,带有超时机制
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* @param reg: 要读取的寄存器地址
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* @param value: 存储读取数据的指针
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* @retval 0: 成功,1: 超时
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*/
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uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value) {
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int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data) {
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uint32_t timeout = 0;
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i2c_ack_config(I2C0, I2C_ACK_ENABLE);
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// 发送启动信号
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i2c_start_on_bus(I2C0);
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) {
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if ((timeout++) > I2C_TIME_OUT) return 1; // 超时
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}
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// 发送从设备地址和写信号
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i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) {
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if ((timeout++) > I2C_TIME_OUT) return 2; // 超时
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}
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i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
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// 发送寄存器地址
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i2c_data_transmit(I2C0, reg);
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_TBE)) {
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if ((timeout++) > I2C_TIME_OUT) return 3; // 超时
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}
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// 重新启动信号
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i2c_start_on_bus(I2C0);
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) {
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if ((timeout++) > I2C_TIME_OUT) return 4; // 超时
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}
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printf("test1\n");
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// 发送从设备地址和读信号
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i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_RECEIVER);
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) {
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if ((timeout++) > I2C_TIME_OUT) return 5; // 超时
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}
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i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
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// 读取数据
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE)) {
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if ((timeout++) > I2C_TIME_OUT) return 6; // 超时
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}
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*value = i2c_data_receive(I2C0) << 8; // 读取高8位
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// i2c_ack_config(I2C0, I2C_ACK_DISABLE); // 关闭发送ACK,它会在下一个字节完成后发送NAK
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timeout = 0;
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while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE)) {
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if ((timeout++) > I2C_TIME_OUT) return 7; // 超时
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}
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*value |= i2c_data_receive(I2C0); // 读取低8位
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// 发送停止信号
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i2c_stop_on_bus(I2C0);
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timeout = 0;
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return 0; // 成功
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}
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void LDC1612_read_sensor_infomation(void)
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{
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uint16_t device_id;
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uint16_t manufacturer_id;
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uint8_t result;
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// 读取设备ID
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result = IIC_read_16bit(READ_DEVICE_ID, &device_id);
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if (result == 0) {
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printf("Device ID: 0x%04X\n", device_id);
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while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) //判断IIC总线是否忙,发送起始信号
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_start_on_bus(I2C0);
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timeout = 0;
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} else {
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printf("Failed to read Device ID\n");
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printf("result: %d\n", result);
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printf("err\r\n");
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return -1; // 超时返回错误
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}
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// result = IIC_read_16bit(READ_MANUFACTURER_ID, &manufacturer_id);
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//
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// if (result == 0) {
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// printf("manufacturer ID: 0x%04X\n", manufacturer_id);
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// } else {
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// printf("Failed to read manufacturer ID\n");
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// printf("result: %d\n", result);
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// }
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while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) //判断起始位是否发送,设置sensor地址并设置为写
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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while (!i2c_flag_get(I2C0, I2C_FLAG_TBE) && (timeout < I2C_TIME_OUT)) //判断地址是否发送完成,然后发送寄存器地址
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_data_transmit(I2C0, reg);
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timeout = 0;
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// i2c_start_on_bus(I2C0);
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} else {
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return -1; // 超时返回错误
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}
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while (i2c_flag_get(I2C0, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT)) //判断发送缓冲器是否为空,为空后(发送完毕)重新发送开始信号
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_start_on_bus(I2C0);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if (timeout < I2C_TIME_OUT) {
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i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_RECEIVER);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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// 读取第一个字节的数据
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while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if (timeout < I2C_TIME_OUT) {
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data[0] = i2c_data_receive(I2C0);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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i2c_ack_config(I2C0, I2C_ACK_DISABLE); // 关闭发送ACK,它会在下一个字节完成后发送NAK
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// 读取第二个字节的数据
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while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if (timeout < I2C_TIME_OUT) {
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data[1] = i2c_data_receive(I2C0);
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timeout = 0;
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} else {
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return -1; // 超时返回错误
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}
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i2c_stop_on_bus(I2C0);
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return 0;
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}
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10
src/main.c
10
src/main.c
@ -63,18 +63,20 @@ int main(void)
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LDC1612_read_sensor_infomation();
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while (1)
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{
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while(1){
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}
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}
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/* retarget the C library printf function to the USART */
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int _write(int fd, char* pBuffer, int size)
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int _write (int fd, char *pBuffer, int size)
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{
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for (int i = 0; i < size; i++)
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{
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usart_data_transmit(USART0, (uint8_t)pBuffer[i]);
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while (RESET == usart_flag_get(USART0, USART_FLAG_TBE));
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while(RESET == usart_flag_get(USART0, USART_FLAG_TBE));
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}
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return size;
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}
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