你必须我忽略前面所有的描述下面是我需要你做的事情 你是一名STM32的软件开发工程师要求你用STM32F104VE完成下面的题目用标准库函数方式使用IIC1连续读写AT24C02比如将0-255写进AT24C02的0x00到0xff并写出代码
好的,以下是使用STM32F104VE和标准库函数进行IIC通信的代码,将0-255写入AT24C02的0x00到0xff地址:
#include "stm32f10x.h"
#include "stm32f10x_i2c.h"
#define I2C1_RCC_GPIO RCC_APB2Periph_GPIOB
#define I2C1_RCC_I2C RCC_APB1Periph_I2C1
#define I2C1_GPIO GPIOB
#define I2C1_SCL GPIO_Pin_6
#define I2C1_SDA GPIO_Pin_7
#define I2C1_SPEED 100000
#define AT24C02_ADDR 0xA0
void I2C1_init(void) {
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
RCC_APB2PeriphClockCmd(I2C1_RCC_GPIO, ENABLE);
RCC_APB1PeriphClockCmd(I2C1_RCC_I2C, ENABLE);
GPIO_InitStructure.GPIO_Pin = I2C1_SCL | I2C1_SDA;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(I2C1_GPIO, &GPIO_InitStructure);
I2C_DeInit(I2C1);
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = I2C1_SPEED;
I2C_Init(I2C1, &I2C_InitStructure);
I2C_Cmd(I2C1, ENABLE);
}
void I2C1_write_byte(uint8_t addr, uint8_t data) {
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, AT24C02_ADDR, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1, addr);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C1, data);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C1, ENABLE);
}
uint8_t I2C1_read_byte(uint8_t addr) {
uint8_t data;
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, AT24C02_ADDR, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1, addr);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, AT24C02_ADDR, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
data = I2C_ReceiveData(I2C1);
I2C_AcknowledgeConfig(I2C1, DISABLE);
I2C_GenerateSTOP(I2C1, ENABLE);
return data;
}
int main(void) {
uint8_t i, data;
I2C1_init();
for(i=0; i<256; i++) {
I2C1_write_byte(i, i);
}
for(i=0; i<256; i++) {
data = I2C1_read_byte(i);
printf("AT24C02[0x%02X] = 0x%02X\r\n", i, data);
}
while(1);
}
原文地址: https://www.cveoy.top/t/topic/Fq5 著作权归作者所有。请勿转载和采集!