moyuhai
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*!
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* \file i2c_slave.c
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*
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* \brief Target i2c slave implementation
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*
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* \copyright Revised BSD License, see section \ref LICENSE.
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*
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* \code
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*
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* _ __ _ ________ _
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* | |/ /(_)___ / ____/ /_ (_)___
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* | // / __ \/ / / __ \/ / __ \
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* / |/ / / / / /___/ / / / / /_/ /
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* /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
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* /_/
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* (C) 2022-2025 XinChip
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*
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* \endcode
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*
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* \author ( XinChip ) Alex-J
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*
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* \author ( XinChip )
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*/
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/*-----------------------------------------------------------------------------------
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INCLUDE HEADE FILES
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------------------------------------------------------------------------------------*/
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#include "i2c_slave.h"
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#include "xc6xxx_hal_i2c.h"
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/*------------------------------------------------------------------------------------
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Macros
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-------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------------
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Global Variables
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-------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------------
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Functions
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-------------------------------------------------------------------------------------*/
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/**
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* @brief i2c_slave_demo
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* @details
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* @param void
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* @retval void
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*/
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void i2c_slave_demo(void) {
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DEBUG("i2c_slave_test \n");
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I2C_InitTypeDef I2C_InitStruct = {0};
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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GPIO_InitStruct.Mux = GPIO_Mux0;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Int = NOT_INT;
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GPIO_InitStruct.Pin = GPIO_5;
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GPIO_InitStruct.Dir = GPIO_DIR_OUTPUT;
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GPIO_InitStruct.FunSel = I2C_SCL;
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GPIO_Init(&GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_4;
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GPIO_InitStruct.Dir = GPIO_DIR_INPUT;
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GPIO_InitStruct.FunSel = I2C_SDA;
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GPIO_Init(&GPIO_InitStruct);
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I2C_InitStruct.I2C_ClockSpeed = I2C_ClockSpeed_400K;
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I2C_InitStruct.I2C_Mode = I2C_Mode_SLAVE;
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I2C_InitStruct.I2C_OwnAddress1 = 0xA0 >> 1;
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I2C_Init(XC_I2C, &I2C_InitStruct);
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I2C_Enable_IT(XC_I2C, I2C_INTR_STAT_RX_DONE_GENERATED |
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I2C_INTR_STAT_STOP_DET_GENERATED |
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I2C_INTR_STAT_RD_REQ_GENERATED |
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I2C_INTR_STAT_RX_FULL_GENERATED);
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I2C_FIFO_IT_RXTL_Set(XC_I2C, I2C_RX_TL_FIFO_1);
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I2C_FIFO_IT_TXTL_Set(XC_I2C, I2C_TX_TL_FIFO_0);
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NVIC_EnableIRQ(I2C_IRQn);
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while (1) {
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if (i2c_slave_rx_flag == 1) {
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for (int i = 0; i < 32; i++) {
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DEBUG("test_buff[%d]=%d\n", i, i2c_slave_rx_buff[i]);
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}
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i2c_slave_rx_flag = 0;
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}
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}
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}
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