zhengxinandCursor
851e347cf5
纳入固件源码、屏幕组件、nand_xfer 工具和文档。忽略本机构建产物、sdkconfig，以及含本机路径的依赖锁。 Co-authored-by: Cursor <cursoragent@cursor.com>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
#include <stdio.h>
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#include "i2c_bsp.h"
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#define TEST_I2C_PORT I2C_NUM_0
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//#define EXAMPLE_USE_TOUCH //触控屏的实现
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#ifndef EXAMPLE_USE_TOUCH
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#define I2C_MASTER_SCL_IO 39
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#define I2C_MASTER_SDA_IO 40
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void I2C_master_Init(void)
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{
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i2c_config_t conf =
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{
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.mode = I2C_MODE_MASTER,
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.sda_io_num = I2C_MASTER_SDA_IO, // 配置 SDA 的 GPIO
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_io_num = I2C_MASTER_SCL_IO, // 配置 SCL 的 GPIO
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = 300 * 1000, // 为项目选择频率
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.clk_flags = 0, // 可选项，可以使用 I2C_SCLK_SRC_FLAG_* 标志来选择 I2C 源时钟
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};
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ESP_ERROR_CHECK(i2c_param_config(TEST_I2C_PORT, &conf));
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ESP_ERROR_CHECK(i2c_driver_install(TEST_I2C_PORT, conf.mode,0,0,0));
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}
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#endif
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uint8_t I2C_writr_buff(uint8_t addr,uint8_t reg,uint8_t *buf,uint8_t len)
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{
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uint8_t ret;
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uint8_t *pbuf = (uint8_t*)malloc(len+1);
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pbuf[0] = reg;
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for(uint8_t i = 0; i<len; i++)
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{
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pbuf[i+1] = buf[i];
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}
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ret = i2c_master_write_to_device(TEST_I2C_PORT,addr,pbuf,len+1,1000);
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free(pbuf);
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pbuf = NULL;
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return ret;
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}
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uint8_t I2C_read_buff(uint8_t addr,uint8_t reg,uint8_t *buf,uint8_t len)
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{
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uint8_t ret;
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ret = i2c_master_write_read_device(TEST_I2C_PORT,addr,®,1,buf,len,1000);
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return ret;
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}
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uint8_t I2C_master_write_read_device(uint8_t addr,uint8_t *writeBuf,uint8_t writeLen,uint8_t *readBuf,uint8_t readLen)
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{
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uint8_t ret;
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ret = i2c_master_write_read_device(TEST_I2C_PORT,addr,writeBuf,writeLen,readBuf,readLen,1000);
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return ret;
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} |