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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
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* i2c_slave.c
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*
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* Created on: Apr 19, 2024
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* Author: NikmaOS-W
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*/
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#include "i2c_slave.h"
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#define CTLR1_SWRST_Set ((uint16_t)0x8000)
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void I2C_Slave_Init(void){
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//扭抉技快投忘找抆 扭抉扼抖快 我扶我扯我忘抖我戒忘扯我我 SPI 找忘抗 抗忘抗 找忘技 批忪快 志抗抖攻折快扶 扭抉把找 GPIO
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GPIO_InitTypeDef GPIO_InitStructure={0};
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I2C_InitTypeDef I2C_InitStruct={0};
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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I2C_InitStruct.I2C_ClockSpeed = 100000;
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I2C_InitStruct.I2C_Mode = I2C_Mode_I2C;
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I2C_InitStruct.I2C_DutyCycle = I2C_DutyCycle_2;
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I2C_InitStruct.I2C_OwnAddress1 = 96;
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I2C_InitStruct.I2C_Ack = I2C_Ack_Enable;
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I2C_InitStruct.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
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I2C_Init(I2C1,&I2C_InitStruct);
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I2C_Cmd(I2C1, ENABLE);
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I2C_AcknowledgeConfig( I2C1, ENABLE );
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}
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void I2C_slave_rcv(I2C_TypeDef * I2Cx,u8 * buf, u8 size){
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while( I2C_CheckEvent(I2Cx, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED)!=READY){
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__NOP();
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};
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__NOP();
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for (u8 i=0;i<size;i++){
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while( I2C_CheckEvent(I2Cx,I2C_EVENT_SLAVE_BYTE_RECEIVED)!=READY){
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};
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buf[i]=I2C_ReceiveData(I2Cx);}
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while( I2C_CheckEvent(I2Cx,I2C_EVENT_SLAVE_STOP_DETECTED)!=READY){
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};
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I2C_Cmd(I2Cx, ENABLE);
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}
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