mirror of
https://github.com/Arthur-cai/Soft_I2C_Driver.git
synced 2025-06-17 13:07:53 +00:00
8d6fbce170
1. 修改停止信号函数为void型，且超时不会return 2. 起始信号函数增加时钟延展判断 3. I2C驱动结构体增加延展计数 4. I2C驱动初始化函数增加传参，设置延展计数 Signed-off-by: ArthurCai <arthurcai_c@163.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
#include "gd32f30x.h"
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#include "systick.h"
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#include <string.h>
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// 引入软件模拟I2C头文件
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#include "soft_i2c_dev.h"
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void led_init(void) {
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rcu_periph_clock_enable(RCU_GPIOC);
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gpio_init(GPIOC, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_13);
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}
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void led_on(void) {
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gpio_bit_set(GPIOC, GPIO_PIN_13);
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}
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void led_off(void) {
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gpio_bit_reset(GPIOC, GPIO_PIN_13);
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}
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#define SLAVE_ADDR 0xA0 ///< 从机地址
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#define REG_ADDR 0x00 ///< 寄存器地址
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uint8_t w_buf[8] = {0xAA, 0xA5, 0x5A, 0xFF, 0xFA, 0xAF, 0xDD, 0xEE};
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uint8_t r_buf[8] = {0};
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uint8_t flag = 1;
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soft_i2c_err_t ret = SOFT_I2C_ERR_OK;
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bool equal = false;
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/*!
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\brief main function
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\param[in] none
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\param[out] none
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\retval none
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*/
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int main(void) {
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systick_config();
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led_init();
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led_on();
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// 初始化结构体对象
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ret = soft_i2c_init(I2C_DEV, SOFT_I2C_DEFAULT_WAITCNT);
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while (1) {
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/* turn on LED1 */
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led_on();
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/* insert 200 ms delay */
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delay_1ms(200);
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{
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memset(r_buf, 0, 8);
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if (flag) {
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ret = soft_i2c_write(I2C_DEV, SLAVE_ADDR, REG_ADDR, 1, w_buf, 8);
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// if (ret != SOFT_I2C_ERR_OK) {
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// while(1);
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// }
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equal = false;
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} else {
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ret = soft_i2c_read(I2C_DEV, SLAVE_ADDR, REG_ADDR, 1, r_buf, 8);
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// if (ret != SOFT_I2C_ERR_OK) {
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// while(1);
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// }
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equal = (memcmp(r_buf, w_buf, 8) == 0) ? true : false;
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}
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flag = !flag;
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}
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/* turn off LEDs */
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led_off();
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/* insert 200 ms delay */
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delay_1ms(200);
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}
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}
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