mirror of
https://github.com/betaflight/betaflight.git
synced 2025-07-23 00:05:33 +03:00
Normalize all the line endings
This commit is contained in:
Dominic Clifton
parent
4237370b60
commit
d60183d91d
396 changed files with 158300 additions and 158300 deletions
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@ -1,310 +1,310 @@
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/*
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* This file is part of Cleanflight.
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*
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* Cleanflight is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Cleanflight is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Cleanflight. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <platform.h>
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#include "build_config.h"
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#include "gpio.h"
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#include "system.h"
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#include "bus_i2c.h"
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#ifndef SOFT_I2C
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#define I2C_SHORT_TIMEOUT ((uint32_t)0x1000)
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#define I2C_LONG_TIMEOUT ((uint32_t)(10 * I2C_SHORT_TIMEOUT))
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#define I2C1_SCL_GPIO GPIOB
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#define I2C1_SCL_PIN GPIO_Pin_6
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#define I2C1_SCL_PIN_SOURCE GPIO_PinSource6
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#define I2C1_SCL_CLK_SOURCE RCC_AHBPeriph_GPIOB
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#define I2C1_SDA_GPIO GPIOB
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#define I2C1_SDA_PIN GPIO_Pin_7
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#define I2C1_SDA_PIN_SOURCE GPIO_PinSource7
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#define I2C1_SDA_CLK_SOURCE RCC_AHBPeriph_GPIOB
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#define I2C2_SCL_GPIO GPIOF
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#define I2C2_SCL_PIN GPIO_Pin_6
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#define I2C2_SCL_PIN_SOURCE GPIO_PinSource6
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#define I2C2_SCL_CLK_SOURCE RCC_AHBPeriph_GPIOF
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#define I2C2_SDA_GPIO GPIOA
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#define I2C2_SDA_PIN GPIO_Pin_10
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#define I2C2_SDA_PIN_SOURCE GPIO_PinSource10
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#define I2C2_SDA_CLK_SOURCE RCC_AHBPeriph_GPIOA
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static uint32_t i2cTimeout;
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static volatile uint16_t i2c1ErrorCount = 0;
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static volatile uint16_t i2c2ErrorCount = 0;
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///////////////////////////////////////////////////////////////////////////////
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// I2C TimeoutUserCallback
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///////////////////////////////////////////////////////////////////////////////
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uint32_t i2cTimeoutUserCallback(I2C_TypeDef *I2Cx)
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{
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if (I2Cx == I2C1) {
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i2c1ErrorCount++;
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} else {
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i2c2ErrorCount++;
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}
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return false;
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}
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void i2cInitPort(I2C_TypeDef *I2Cx)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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I2C_InitTypeDef I2C_InitStructure;
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if (I2Cx == I2C1) {
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
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RCC_AHBPeriphClockCmd(I2C1_SCL_CLK_SOURCE | I2C1_SDA_CLK_SOURCE, ENABLE);
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RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK);
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//i2cUnstick(I2Cx); // Clock out stuff to make sure slaves arent stuck
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GPIO_PinAFConfig(I2C1_SCL_GPIO, I2C1_SCL_PIN_SOURCE, GPIO_AF_4);
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GPIO_PinAFConfig(I2C1_SDA_GPIO, I2C1_SDA_PIN_SOURCE, GPIO_AF_4);
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GPIO_StructInit(&GPIO_InitStructure);
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I2C_StructInit(&I2C_InitStructure);
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// Init pins
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Pin = I2C1_SCL_PIN;
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GPIO_Init(I2C1_SCL_GPIO, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = I2C1_SDA_PIN;
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GPIO_Init(I2C1_SDA_GPIO, &GPIO_InitStructure);
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I2C_StructInit(&I2C_InitStructure);
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I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
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I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
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I2C_InitStructure.I2C_DigitalFilter = 0x00;
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I2C_InitStructure.I2C_OwnAddress1 = 0x00;
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I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
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I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
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I2C_InitStructure.I2C_Timing = 0x00E0257A; // 400 Khz, 72Mhz Clock, Analog Filter Delay ON, Rise 100, Fall 10.
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//I2C_InitStructure.I2C_Timing = 0x8000050B;
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I2C_Init(I2C1, &I2C_InitStructure);
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I2C_Cmd(I2C1, ENABLE);
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}
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if (I2Cx == I2C2) {
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
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RCC_AHBPeriphClockCmd(I2C2_SCL_CLK_SOURCE | I2C2_SDA_CLK_SOURCE, ENABLE);
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RCC_I2CCLKConfig(RCC_I2C2CLK_SYSCLK);
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//i2cUnstick(I2Cx); // Clock out stuff to make sure slaves arent stuck
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GPIO_PinAFConfig(I2C2_SCL_GPIO, I2C2_SCL_PIN_SOURCE, GPIO_AF_4);
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GPIO_PinAFConfig(I2C2_SDA_GPIO, I2C2_SDA_PIN_SOURCE, GPIO_AF_4);
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GPIO_StructInit(&GPIO_InitStructure);
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I2C_StructInit(&I2C_InitStructure);
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// Init pins
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Pin = I2C2_SCL_PIN;
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GPIO_Init(I2C2_SCL_GPIO, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = I2C2_SDA_PIN;
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GPIO_Init(I2C2_SDA_GPIO, &GPIO_InitStructure);
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I2C_StructInit(&I2C_InitStructure);
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I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
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I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
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I2C_InitStructure.I2C_DigitalFilter = 0x00;
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I2C_InitStructure.I2C_OwnAddress1 = 0x00;
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I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
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I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
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I2C_InitStructure.I2C_Timing = 0x00E0257A; // 400 Khz, 72Mhz Clock, Analog Filter Delay ON, Rise 100, Fall 10.
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//I2C_InitStructure.I2C_Timing = 0x8000050B;
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I2C_Init(I2C2, &I2C_InitStructure);
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I2C_Cmd(I2C2, ENABLE);
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}
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}
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void i2cInit(I2CDevice index)
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{
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i2cInitPort(I2C1); // FIXME hard coded to use I2C1 for now
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}
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uint16_t i2cGetErrorCounter(void)
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{
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return i2c1ErrorCount;
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}
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bool i2cWrite(uint8_t addr_, uint8_t reg, uint8_t data)
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{
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I2C_TypeDef* I2Cx = I2C1;
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/* Test on BUSY Flag */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_BUSY) != RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Configure slave address, nbytes, reload, end mode and start or stop generation */
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I2C_TransferHandling(I2Cx, addr_, 1, I2C_Reload_Mode, I2C_Generate_Start_Write);
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/* Wait until TXIS flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TXIS) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Send Register address */
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I2C_SendData(I2Cx, (uint8_t) reg);
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/* Wait until TCR flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TCR) == RESET)
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{
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Configure slave address, nbytes, reload, end mode and start or stop generation */
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I2C_TransferHandling(I2Cx, addr_, 1, I2C_AutoEnd_Mode, I2C_No_StartStop);
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/* Wait until TXIS flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TXIS) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Write data to TXDR */
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I2C_SendData(I2Cx, data);
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/* Wait until STOPF flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_STOPF) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Clear STOPF flag */
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I2C_ClearFlag(I2Cx, I2C_ICR_STOPCF);
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return true;
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}
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bool i2cRead(uint8_t addr_, uint8_t reg, uint8_t len, uint8_t* buf)
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{
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I2C_TypeDef* I2Cx = I2C1;
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/* Test on BUSY Flag */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_BUSY) != RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Configure slave address, nbytes, reload, end mode and start or stop generation */
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I2C_TransferHandling(I2Cx, addr_, 1, I2C_SoftEnd_Mode, I2C_Generate_Start_Write);
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/* Wait until TXIS flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TXIS) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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if (len > 1) {
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reg |= 0x80;
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}
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/* Send Register address */
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I2C_SendData(I2Cx, (uint8_t) reg);
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/* Wait until TC flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TC) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Configure slave address, nbytes, reload, end mode and start or stop generation */
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I2C_TransferHandling(I2Cx, addr_, len, I2C_AutoEnd_Mode, I2C_Generate_Start_Read);
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/* Wait until all data are received */
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while (len) {
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/* Wait until RXNE flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_RXNE) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Read data from RXDR */
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*buf = I2C_ReceiveData(I2Cx);
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/* Point to the next location where the byte read will be saved */
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buf++;
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/* Decrement the read bytes counter */
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len--;
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}
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/* Wait until STOPF flag is set */
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i2cTimeout = I2C_LONG_TIMEOUT;
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while (I2C_GetFlagStatus(I2Cx, I2C_ISR_STOPF) == RESET) {
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if ((i2cTimeout--) == 0) {
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return i2cTimeoutUserCallback(I2Cx);
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}
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}
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/* Clear STOPF flag */
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I2C_ClearFlag(I2Cx, I2C_ICR_STOPCF);
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/* If all operations OK */
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return true;
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}
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#endif
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/*
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* This file is part of Cleanflight.
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*
|
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* Cleanflight is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
|
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* the Free Software Foundation, either version 3 of the License, or
|
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* (at your option) any later version.
|
||||
*
|
||||
* Cleanflight is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU General Public License for more details.
|
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*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with Cleanflight. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <platform.h>
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#include "build_config.h"
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#include "gpio.h"
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#include "system.h"
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#include "bus_i2c.h"
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#ifndef SOFT_I2C
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#define I2C_SHORT_TIMEOUT ((uint32_t)0x1000)
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#define I2C_LONG_TIMEOUT ((uint32_t)(10 * I2C_SHORT_TIMEOUT))
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#define I2C1_SCL_GPIO GPIOB
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#define I2C1_SCL_PIN GPIO_Pin_6
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#define I2C1_SCL_PIN_SOURCE GPIO_PinSource6
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#define I2C1_SCL_CLK_SOURCE RCC_AHBPeriph_GPIOB
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#define I2C1_SDA_GPIO GPIOB
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#define I2C1_SDA_PIN GPIO_Pin_7
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#define I2C1_SDA_PIN_SOURCE GPIO_PinSource7
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#define I2C1_SDA_CLK_SOURCE RCC_AHBPeriph_GPIOB
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#define I2C2_SCL_GPIO GPIOF
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#define I2C2_SCL_PIN GPIO_Pin_6
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#define I2C2_SCL_PIN_SOURCE GPIO_PinSource6
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#define I2C2_SCL_CLK_SOURCE RCC_AHBPeriph_GPIOF
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#define I2C2_SDA_GPIO GPIOA
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#define I2C2_SDA_PIN GPIO_Pin_10
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#define I2C2_SDA_PIN_SOURCE GPIO_PinSource10
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#define I2C2_SDA_CLK_SOURCE RCC_AHBPeriph_GPIOA
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static uint32_t i2cTimeout;
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static volatile uint16_t i2c1ErrorCount = 0;
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static volatile uint16_t i2c2ErrorCount = 0;
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|
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///////////////////////////////////////////////////////////////////////////////
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// I2C TimeoutUserCallback
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///////////////////////////////////////////////////////////////////////////////
|
||||
|
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uint32_t i2cTimeoutUserCallback(I2C_TypeDef *I2Cx)
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{
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if (I2Cx == I2C1) {
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i2c1ErrorCount++;
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} else {
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i2c2ErrorCount++;
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}
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return false;
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}
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||||
|
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void i2cInitPort(I2C_TypeDef *I2Cx)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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I2C_InitTypeDef I2C_InitStructure;
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if (I2Cx == I2C1) {
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
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RCC_AHBPeriphClockCmd(I2C1_SCL_CLK_SOURCE | I2C1_SDA_CLK_SOURCE, ENABLE);
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RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK);
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//i2cUnstick(I2Cx); // Clock out stuff to make sure slaves arent stuck
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GPIO_PinAFConfig(I2C1_SCL_GPIO, I2C1_SCL_PIN_SOURCE, GPIO_AF_4);
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GPIO_PinAFConfig(I2C1_SDA_GPIO, I2C1_SDA_PIN_SOURCE, GPIO_AF_4);
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GPIO_StructInit(&GPIO_InitStructure);
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I2C_StructInit(&I2C_InitStructure);
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// Init pins
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Pin = I2C1_SCL_PIN;
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GPIO_Init(I2C1_SCL_GPIO, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = I2C1_SDA_PIN;
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GPIO_Init(I2C1_SDA_GPIO, &GPIO_InitStructure);
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I2C_StructInit(&I2C_InitStructure);
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I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
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I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
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I2C_InitStructure.I2C_DigitalFilter = 0x00;
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||||
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
|
||||
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
|
||||
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
|
||||
I2C_InitStructure.I2C_Timing = 0x00E0257A; // 400 Khz, 72Mhz Clock, Analog Filter Delay ON, Rise 100, Fall 10.
|
||||
//I2C_InitStructure.I2C_Timing = 0x8000050B;
|
||||
|
||||
I2C_Init(I2C1, &I2C_InitStructure);
|
||||
|
||||
I2C_Cmd(I2C1, ENABLE);
|
||||
}
|
||||
|
||||
if (I2Cx == I2C2) {
|
||||
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
|
||||
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);
|
||||
RCC_AHBPeriphClockCmd(I2C2_SCL_CLK_SOURCE | I2C2_SDA_CLK_SOURCE, ENABLE);
|
||||
RCC_I2CCLKConfig(RCC_I2C2CLK_SYSCLK);
|
||||
|
||||
//i2cUnstick(I2Cx); // Clock out stuff to make sure slaves arent stuck
|
||||
|
||||
GPIO_PinAFConfig(I2C2_SCL_GPIO, I2C2_SCL_PIN_SOURCE, GPIO_AF_4);
|
||||
GPIO_PinAFConfig(I2C2_SDA_GPIO, I2C2_SDA_PIN_SOURCE, GPIO_AF_4);
|
||||
|
||||
GPIO_StructInit(&GPIO_InitStructure);
|
||||
I2C_StructInit(&I2C_InitStructure);
|
||||
|
||||
// Init pins
|
||||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
|
||||
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||||
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
|
||||
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
|
||||
|
||||
GPIO_InitStructure.GPIO_Pin = I2C2_SCL_PIN;
|
||||
GPIO_Init(I2C2_SCL_GPIO, &GPIO_InitStructure);
|
||||
|
||||
GPIO_InitStructure.GPIO_Pin = I2C2_SDA_PIN;
|
||||
GPIO_Init(I2C2_SDA_GPIO, &GPIO_InitStructure);
|
||||
|
||||
I2C_StructInit(&I2C_InitStructure);
|
||||
|
||||
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
|
||||
I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
|
||||
I2C_InitStructure.I2C_DigitalFilter = 0x00;
|
||||
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
|
||||
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
|
||||
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
|
||||
I2C_InitStructure.I2C_Timing = 0x00E0257A; // 400 Khz, 72Mhz Clock, Analog Filter Delay ON, Rise 100, Fall 10.
|
||||
//I2C_InitStructure.I2C_Timing = 0x8000050B;
|
||||
|
||||
I2C_Init(I2C2, &I2C_InitStructure);
|
||||
|
||||
I2C_Cmd(I2C2, ENABLE);
|
||||
}
|
||||
}
|
||||
|
||||
void i2cInit(I2CDevice index)
|
||||
{
|
||||
i2cInitPort(I2C1); // FIXME hard coded to use I2C1 for now
|
||||
}
|
||||
|
||||
uint16_t i2cGetErrorCounter(void)
|
||||
{
|
||||
return i2c1ErrorCount;
|
||||
}
|
||||
|
||||
bool i2cWrite(uint8_t addr_, uint8_t reg, uint8_t data)
|
||||
{
|
||||
I2C_TypeDef* I2Cx = I2C1;
|
||||
|
||||
/* Test on BUSY Flag */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_BUSY) != RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure slave address, nbytes, reload, end mode and start or stop generation */
|
||||
I2C_TransferHandling(I2Cx, addr_, 1, I2C_Reload_Mode, I2C_Generate_Start_Write);
|
||||
|
||||
/* Wait until TXIS flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TXIS) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Send Register address */
|
||||
I2C_SendData(I2Cx, (uint8_t) reg);
|
||||
|
||||
/* Wait until TCR flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TCR) == RESET)
|
||||
{
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure slave address, nbytes, reload, end mode and start or stop generation */
|
||||
I2C_TransferHandling(I2Cx, addr_, 1, I2C_AutoEnd_Mode, I2C_No_StartStop);
|
||||
|
||||
/* Wait until TXIS flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TXIS) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Write data to TXDR */
|
||||
I2C_SendData(I2Cx, data);
|
||||
|
||||
/* Wait until STOPF flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_STOPF) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Clear STOPF flag */
|
||||
I2C_ClearFlag(I2Cx, I2C_ICR_STOPCF);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool i2cRead(uint8_t addr_, uint8_t reg, uint8_t len, uint8_t* buf)
|
||||
{
|
||||
I2C_TypeDef* I2Cx = I2C1;
|
||||
/* Test on BUSY Flag */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_BUSY) != RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure slave address, nbytes, reload, end mode and start or stop generation */
|
||||
I2C_TransferHandling(I2Cx, addr_, 1, I2C_SoftEnd_Mode, I2C_Generate_Start_Write);
|
||||
|
||||
/* Wait until TXIS flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TXIS) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
if (len > 1) {
|
||||
reg |= 0x80;
|
||||
}
|
||||
|
||||
/* Send Register address */
|
||||
I2C_SendData(I2Cx, (uint8_t) reg);
|
||||
|
||||
/* Wait until TC flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_TC) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure slave address, nbytes, reload, end mode and start or stop generation */
|
||||
I2C_TransferHandling(I2Cx, addr_, len, I2C_AutoEnd_Mode, I2C_Generate_Start_Read);
|
||||
|
||||
/* Wait until all data are received */
|
||||
while (len) {
|
||||
/* Wait until RXNE flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_RXNE) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Read data from RXDR */
|
||||
*buf = I2C_ReceiveData(I2Cx);
|
||||
/* Point to the next location where the byte read will be saved */
|
||||
buf++;
|
||||
|
||||
/* Decrement the read bytes counter */
|
||||
len--;
|
||||
}
|
||||
|
||||
/* Wait until STOPF flag is set */
|
||||
i2cTimeout = I2C_LONG_TIMEOUT;
|
||||
while (I2C_GetFlagStatus(I2Cx, I2C_ISR_STOPF) == RESET) {
|
||||
if ((i2cTimeout--) == 0) {
|
||||
return i2cTimeoutUserCallback(I2Cx);
|
||||
}
|
||||
}
|
||||
|
||||
/* Clear STOPF flag */
|
||||
I2C_ClearFlag(I2Cx, I2C_ICR_STOPCF);
|
||||
|
||||
/* If all operations OK */
|
||||
return true;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue