You've already forked M5Unit-TimerPWR-Internal-FW
mirror of
https://github.com/m5stack/M5Unit-TimerPWR-Internal-FW.git
synced 2026-05-20 11:31:37 -07:00
chenzhjie
380 lines
10 KiB
C
380 lines
10 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file i2c.c
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* @brief This file provides code for the configuration
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* of the I2C instances.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2024 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "i2c.h"
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/* USER CODE BEGIN 0 */
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#include <string.h>
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/* USER CODE END 0 */
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/* I2C1 init function */
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void MX_I2C1_Init(void)
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{
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/* USER CODE BEGIN I2C1_Init 0 */
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/* USER CODE END I2C1_Init 0 */
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LL_I2C_InitTypeDef I2C_InitStruct = {0};
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LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1);
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
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/**I2C1 GPIO Configuration
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PB6 ------> I2C1_SCL
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PB7 ------> I2C1_SDA
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*/
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GPIO_InitStruct.Pin = LL_GPIO_PIN_6;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
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LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = LL_GPIO_PIN_7;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
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LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* Peripheral clock enable */
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
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/* I2C1 interrupt Init */
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NVIC_SetPriority(I2C1_IRQn, 0);
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NVIC_EnableIRQ(I2C1_IRQn);
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/* USER CODE BEGIN I2C1_Init 1 */
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/* USER CODE END I2C1_Init 1 */
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/** I2C Initialization
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*/
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I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
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I2C_InitStruct.Timing = 0x00303D5B;
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I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
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I2C_InitStruct.DigitalFilter = 0;
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I2C_InitStruct.OwnAddress1 = 0x56<<1;
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I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
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I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
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LL_I2C_Init(I2C1, &I2C_InitStruct);
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LL_I2C_EnableAutoEndMode(I2C1);
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LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
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LL_I2C_DisableOwnAddress2(I2C1);
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LL_I2C_DisableGeneralCall(I2C1);
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LL_I2C_EnableClockStretching(I2C1);
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/* USER CODE BEGIN I2C1_Init 2 */
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/* USER CODE END I2C1_Init 2 */
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}
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/* I2C2 init function */
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void MX_I2C2_Init(void)
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{
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/* USER CODE BEGIN I2C2_Init 0 */
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/* USER CODE END I2C2_Init 0 */
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LL_I2C_InitTypeDef I2C_InitStruct = {0};
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LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
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/**I2C2 GPIO Configuration
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PA11 [PA9] ------> I2C2_SCL
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PA12 [PA10] ------> I2C2_SDA
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*/
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GPIO_InitStruct.Pin = LL_GPIO_PIN_11;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
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LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = LL_GPIO_PIN_12;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
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LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/* Peripheral clock enable */
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C2);
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/* USER CODE BEGIN I2C2_Init 1 */
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/* USER CODE END I2C2_Init 1 */
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/** I2C Initialization
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*/
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I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
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I2C_InitStruct.Timing = 0x0010061A;
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I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
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I2C_InitStruct.DigitalFilter = 0;
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I2C_InitStruct.OwnAddress1 = 0;
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I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
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I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
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LL_I2C_Init(I2C2, &I2C_InitStruct);
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LL_I2C_EnableAutoEndMode(I2C2);
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LL_I2C_SetOwnAddress2(I2C2, 0, LL_I2C_OWNADDRESS2_NOMASK);
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LL_I2C_DisableOwnAddress2(I2C2);
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LL_I2C_DisableGeneralCall(I2C2);
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LL_I2C_EnableClockStretching(I2C2);
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/* USER CODE BEGIN I2C2_Init 2 */
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I2C2_Start();
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/* USER CODE END I2C2_Init 2 */
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}
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/* USER CODE BEGIN 1 */
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void I2C2_Start(void)
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{
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LL_I2C_Enable(I2C2);
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}
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void I2C2_ClearCR(void)
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{
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(I2C2->CR2 &= (uint32_t)~((uint32_t)(I2C_CR2_SADD | I2C_CR2_HEAD10R | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_RD_WRN)));
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}
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uint8_t I2C2_TransmitData(uint8_t device_id ,uint8_t *pdata, uint8_t size, uint16_t timeout)
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{
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// busy¥Õ¥é¥°¤ò¥Á¥§¥Ã¥¯
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while(LL_I2C_IsActiveFlag_BUSY(I2C2) == SET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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LL_I2C_HandleTransfer(I2C2, device_id, LL_I2C_ADDRSLAVE_7BIT, size, LL_I2C_MODE_AUTOEND, LL_I2C_GENERATE_START_WRITE);
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for(uint8_t i = 0; i < size; i++){
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while(LL_I2C_IsActiveFlag_TXE(I2C2)== RESET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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LL_I2C_TransmitData8(I2C2, *pdata++);
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}
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while(LL_I2C_IsActiveFlag_STOP(I2C2)==RESET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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LL_I2C_ClearFlag_STOP(I2C2);
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// ÔO¶¨¤ò¥ê¥»¥Ã¥È¤¹¤ë
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I2C2_ClearCR();
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return 0;
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}
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uint8_t I2C2_TransmitData_RepeatedStart(uint8_t device_id ,uint8_t *pdata, uint8_t size, uint16_t timeout)
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{
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// busy¥Õ¥é¥°¤ò¥Á¥§¥Ã¥¯
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while(LL_I2C_IsActiveFlag_BUSY(I2C2) == SET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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LL_I2C_HandleTransfer(I2C2, device_id, LL_I2C_ADDRSLAVE_7BIT, size, LL_I2C_MODE_SOFTEND, LL_I2C_GENERATE_START_WRITE);
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for(uint8_t i = 0; i < size; i++){
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while(LL_I2C_IsActiveFlag_TXE(I2C2)== RESET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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LL_I2C_TransmitData8(I2C2, *pdata++);
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}
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while(LL_I2C_IsActiveFlag_TC(I2C2)==RESET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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return 0;
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}
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uint8_t I2C2_ReceiveData(uint8_t device_id , uint8_t *pdata, uint8_t size, uint8_t timeout)
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{
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// ³õÆÚÔO¶¨
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LL_I2C_HandleTransfer(I2C2, device_id, LL_I2C_ADDRSLAVE_7BIT, size, LL_I2C_MODE_AUTOEND, LL_I2C_GENERATE_START_READ);
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for(uint8_t i = 0; i < size; i++){
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while(LL_I2C_IsActiveFlag_RXNE(I2C2) == RESET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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*pdata++ = LL_I2C_ReceiveData8(I2C2);
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}
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while(LL_I2C_IsActiveFlag_STOP(I2C2)==RESET) {
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if(LL_SYSTICK_IsActiveCounterFlag())
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{
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if (timeout-- == 0)
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{
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I2C2_ClearCR();
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return 1;
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}
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}
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}
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LL_I2C_ClearFlag_STOP(I2C2);
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// ÔO¶¨¤ò¥ê¥»¥Ã¥È¤¹¤ë
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I2C2_ClearCR();
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return 0;
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}
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uint8_t I2C_Write_Bytes(uint8_t DeviceAddress, uint8_t MemAddress, uint8_t *pData, uint8_t TxLen,uint16_t Timeout)
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{
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uint8_t tx_buffer[TxLen+1];
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tx_buffer[0] = MemAddress;
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memcpy(&tx_buffer[1], pData, TxLen);
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return I2C2_TransmitData(DeviceAddress, tx_buffer, TxLen+1, Timeout);
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}
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uint8_t I2C_Read_Bytes(uint8_t DeviceAddress, uint8_t MemAddress, uint8_t *pData, uint8_t RxLen,uint16_t Timeout)
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{
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if (!I2C2_TransmitData_RepeatedStart(DeviceAddress, &MemAddress, 1, Timeout)) {
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return I2C2_ReceiveData(DeviceAddress ,pData, RxLen, Timeout);
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}
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else {
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return 1;
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}
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}
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void user_i2c_init(void)
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{
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/* USER CODE BEGIN I2C1_Init 0 */
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/* USER CODE END I2C1_Init 0 */
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LL_I2C_InitTypeDef I2C_InitStruct = {0};
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LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1);
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
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/**I2C1 GPIO Configuration
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PB6 ------> I2C1_SCL
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PB7 ------> I2C1_SDA
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*/
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GPIO_InitStruct.Pin = LL_GPIO_PIN_6;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
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LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = LL_GPIO_PIN_7;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
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LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* Peripheral clock enable */
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
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/* I2C1 interrupt Init */
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NVIC_SetPriority(I2C1_IRQn, 0);
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NVIC_EnableIRQ(I2C1_IRQn);
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/* USER CODE BEGIN I2C1_Init 1 */
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/* USER CODE END I2C1_Init 1 */
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/** I2C Initialization
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*/
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I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
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I2C_InitStruct.Timing = 0x00303D5B;
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I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
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I2C_InitStruct.DigitalFilter = 0;
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I2C_InitStruct.OwnAddress1 = i2c_address[0]<<1;
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I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
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I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
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LL_I2C_Init(I2C1, &I2C_InitStruct);
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LL_I2C_EnableAutoEndMode(I2C1);
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LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
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LL_I2C_DisableOwnAddress2(I2C1);
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LL_I2C_DisableGeneralCall(I2C1);
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LL_I2C_EnableClockStretching(I2C1);
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/* USER CODE BEGIN I2C1_Init 2 */
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set_i2c_slave_address(i2c_address[0]);
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/* USER CODE END I2C1_Init 2 */
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}
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/* USER CODE END 1 */
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