From 6e5f041f9aa1c91150988b47ea7de67b9e34b7db Mon Sep 17 00:00:00 2001
From: Wenxue <wenxue.guo@avnet.com>
Date: Tue, 02 Sep 2025 10:08:16 +0800
Subject: [PATCH] GPIO模拟I2C实现SHT20
---
/dev/null | 140 ------------
Core/Inc/stm32l4xx_hal_conf.h | 2
ISKBoard.ioc | 31 +-
Core/Src/board/sht20.c | 13
Core/Src/main.c | 2
Core/Src/board/i2c_bitbang.c | 341 +++++++++++++++++++++++++++++++
Core/Src/board/i2c_bitbang.h | 106 +++++++++
7 files changed, 467 insertions(+), 168 deletions(-)
diff --git a/Core/Inc/i2c.h b/Core/Inc/i2c.h
deleted file mode 100644
index e5f10f5..0000000
--- a/Core/Inc/i2c.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/* USER CODE BEGIN Header */
-/**
- ******************************************************************************
- * @file i2c.h
- * @brief This file contains all the function prototypes for
- * the i2c.c file
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2025 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- */
-/* USER CODE END Header */
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __I2C_H__
-#define __I2C_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Includes ------------------------------------------------------------------*/
-#include "main.h"
-
-/* USER CODE BEGIN Includes */
-
-/* USER CODE END Includes */
-
-extern I2C_HandleTypeDef hi2c1;
-
-/* USER CODE BEGIN Private defines */
-
-/* USER CODE END Private defines */
-
-void MX_I2C1_Init(void);
-
-/* USER CODE BEGIN Prototypes */
-
-/* USER CODE END Prototypes */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __I2C_H__ */
-
diff --git a/Core/Inc/stm32l4xx_hal_conf.h b/Core/Inc/stm32l4xx_hal_conf.h
index 779c90a..a8c2870 100644
--- a/Core/Inc/stm32l4xx_hal_conf.h
+++ b/Core/Inc/stm32l4xx_hal_conf.h
@@ -40,7 +40,7 @@
/*#define HAL_CRYP_MODULE_ENABLED */
/*#define HAL_CAN_MODULE_ENABLED */
/*#define HAL_COMP_MODULE_ENABLED */
-#define HAL_I2C_MODULE_ENABLED
+/*#define HAL_I2C_MODULE_ENABLED */
/*#define HAL_CRC_MODULE_ENABLED */
/*#define HAL_CRYP_MODULE_ENABLED */
/*#define HAL_DAC_MODULE_ENABLED */
diff --git a/Core/Src/board/i2c_bitbang.c b/Core/Src/board/i2c_bitbang.c
new file mode 100644
index 0000000..b2040cd
--- /dev/null
+++ b/Core/Src/board/i2c_bitbang.c
@@ -0,0 +1,341 @@
+/**********************************************************************
+ * Copyright: (C)2024 LingYun IoT System Studio
+ * Author: GuoWenxue<guowenxue@gmail.com>
+ *
+ * Description: The purpose of this code is to provide a simple C library,
+ * which providing software bit-bang of the I2C protocol on
+ * any GPIO pins for ISKBoard.
+ *
+ * ChangeLog:
+ * Version Date Author Description
+ * V1.0.0 2024.08.29 GuoWenxue Release initial version
+ *
+ ***********************************************************************/
+
+#include "i2c_bitbang.h"
+#include "miscdev.h" /* udelay() implement by TIM6 */
+
+/*
+ *+---------------------------------+
+ *| I2C GPIO port Level functions |
+ *+---------------------------------+
+ */
+
+#define mdelay(x) HAL_Delay(x)
+
+enum
+{
+ LOW,
+ HIGH,
+};
+
+i2c_bus_t i2c_bus =
+{
+ /* Addr SCL_Pin SDA_Pin */
+ 0x00, {GPIOB, GPIO_PIN_6 }, {GPIOB, GPIO_PIN_7 },
+};
+
+static inline void SDA_IN(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+ GPIO_InitStruct.Pin = i2c_bus.sda.pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ HAL_GPIO_Init(i2c_bus.sda.group, &GPIO_InitStruct);
+}
+
+static inline void SDA_OUT(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+ GPIO_InitStruct.Pin = i2c_bus.sda.pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ HAL_GPIO_Init(i2c_bus.sda.group, &GPIO_InitStruct);
+}
+
+static inline void SCL_OUT(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+ GPIO_InitStruct.Pin = i2c_bus.scl.pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ HAL_GPIO_Init(i2c_bus.scl.group, &GPIO_InitStruct);
+}
+
+static inline void SCL_SET(int level)
+{
+ HAL_GPIO_WritePin(i2c_bus.scl.group, i2c_bus.scl.pin, level?GPIO_PIN_SET:GPIO_PIN_RESET);
+}
+
+static inline void SDA_SET(int level)
+{
+ HAL_GPIO_WritePin(i2c_bus.sda.group, i2c_bus.sda.pin, level?GPIO_PIN_SET:GPIO_PIN_RESET);
+}
+
+static inline GPIO_PinState SCL_GET(void)
+{
+ return HAL_GPIO_ReadPin(i2c_bus.scl.group, i2c_bus.scl.pin);
+}
+
+static inline GPIO_PinState SDA_GET(void)
+{
+ return HAL_GPIO_ReadPin(i2c_bus.sda.group, i2c_bus.sda.pin);
+}
+
+/*
+ *+--------------------------------+
+ *| I2C Low Level API functions |
+ *+--------------------------------+
+ */
+
+void I2C_StartCondition(void)
+{
+ SDA_OUT();
+ SCL_OUT();
+
+ /* Start Condition Clock Sequence:
+ ______
+ SCL: |___
+ _____
+ SDA: |_____
+ */
+ SDA_SET(HIGH);
+ SCL_SET( HIGH);
+ udelay(1);
+
+ SDA_SET(LOW);
+ udelay(1); // hold time start condition (t_HD;STA)
+ SCL_SET(LOW);
+ udelay(1);
+}
+
+void I2C_StopCondition(void)
+{
+ SDA_OUT();
+
+ /* SCL Stop Condition Clock Sequence:
+ _______
+ SCL: ___|
+ _____
+ SDA: _____|
+ */
+ SCL_SET(LOW);
+ SDA_SET(LOW);
+ udelay(1);
+
+ SCL_SET(HIGH);
+ SDA_SET(HIGH);
+ udelay(1);
+}
+
+int I2C_SendAddress(uint8_t dir)
+{
+ uint8_t addr;
+ uint8_t rv;
+
+ if( I2C_WR == dir )
+ {
+ addr = W_ADDR(i2c_bus.addr);
+ }
+ else
+ {
+ addr = R_ADDR(i2c_bus.addr);
+ }
+
+ rv=I2C_WriteByte(addr);
+
+ return rv;
+}
+
+void I2C_Ack(uint8_t ack)
+{
+ if(ACK_NONE == ack)
+ return ;
+
+ SCL_SET(LOW);
+ SDA_OUT();
+
+ if( ACK==ack )
+ SDA_SET(LOW);
+ else if( NAK==ack )
+ SDA_SET(HIGH);
+
+ udelay(1);
+
+ SCL_SET( HIGH);
+ udelay(1);
+ SCL_SET(LOW);
+}
+
+int I2C_WriteByte(uint8_t txByte)
+{
+ int error = 0;
+ uint8_t mask;
+
+ SDA_OUT();
+ SCL_SET(LOW);
+
+ /* start send 8 bits data, MSB */
+ for(mask=0x80; mask>0; mask>>=1)
+ {
+ if((mask & txByte) == 0)
+ SDA_SET(LOW);
+ else
+ SDA_SET(HIGH);
+
+ udelay(1); // data set-up time (t_SU;DAT)
+ SCL_SET(HIGH);
+ udelay(1); // SCL high time (t_HIGH)
+ SCL_SET(LOW);
+ udelay(1); // data hold time(t_HD;DAT)
+ }
+
+ /* Wait for ACK/NAK */
+ SDA_IN();
+ SCL_SET(HIGH); // clk #9 for ack
+ udelay(1); // data set-up time (t_SU;DAT)
+
+ /* High level means NAK */
+ if( SDA_GET() )
+ error = -ERROR_ACK;
+
+ SCL_SET(LOW);
+
+ udelay(1);
+
+ return error;
+}
+
+static inline int I2C_WaitWhileClockStreching(uint8_t timeout)
+{
+ while( SCL_GET()== 0)
+ {
+ if(timeout-- == 0)
+ return -ERROR_TIMEOUT;
+
+ udelay(10);
+ }
+ return ERROR_NONE;
+}
+
+int I2C_ReadByte(uint8_t *rxByte, uint8_t ack, uint32_t timeout)
+{
+ uint8_t error = 0;
+ uint8_t mask;
+
+ *rxByte = 0x00;
+ SDA_IN();
+
+ /* start read 8 bits data, MSB */
+ for(mask = 0x80; mask > 0; mask >>= 1)
+ {
+ SCL_SET(HIGH); // start clock on SCL-line
+ udelay(1); // clock set-up time (t_SU;CLK)
+
+ // wait while clock streching
+ error = I2C_WaitWhileClockStreching(timeout);
+
+ udelay(1); // SCL high time (t_HIGH)
+
+ if( SDA_GET() )
+ *rxByte |= mask; // read bit
+
+ SCL_SET(LOW);
+ udelay(1); // data hold time(t_HD;DAT)
+ }
+
+ I2C_Ack(ack);
+
+ return error;
+}
+
+/*
+ *+--------------------------------+
+ *| I2C High Level API functions |
+ *+--------------------------------+
+ */
+
+int i2c_lock(uint8_t addr)
+{
+ /* I2C bus already be used */
+ while( i2c_bus.addr && i2c_bus.addr!=addr )
+ {
+ mdelay(10);
+ }
+
+ i2c_bus.addr = addr;
+
+ return 0;
+}
+
+void i2c_free(void)
+{
+ i2c_bus.addr = 0x0;
+}
+
+int i2c_write(uint8_t *data, int bytes)
+{
+ int i;
+ int rv = 0;
+
+ if( !data )
+ {
+ return -ERROR_PARM;
+ }
+
+ /* send start condition */
+ I2C_StartCondition();
+
+ /* send device address for write */
+ if( (rv=I2C_SendAddress(I2C_WR)) < 0 )
+ goto OUT;
+
+ /* send data to slave device */
+ for (i=0; i<bytes; i++)
+ {
+ if( (rv=I2C_WriteByte(data[i])) < 0 )
+ {
+ break;
+ }
+ }
+
+OUT:
+ /* send stop condition */
+ I2C_StopCondition();
+
+ return rv;
+}
+
+int i2c_read(uint8_t *buf, int size)
+{
+ int i;
+ int rv = ERROR_NONE;
+ uint8_t byte;
+
+ /* send start condition */
+ I2C_StartCondition();
+
+ /* send device address for read */
+ if( (rv=I2C_SendAddress(I2C_RD)) < 0 )
+ goto OUT;
+
+ /* read data from slave device */
+ for (i=0; i<size; i++)
+ {
+ if( (rv=I2C_ReadByte(&byte, ACK, I2C_CLK_STRETCH_TIMEOUT)) < 0 )
+ goto OUT;
+
+ buf[i] = byte;
+ }
+
+OUT:
+ /* send stop condition */
+ I2C_StopCondition();
+ return rv;
+}
diff --git a/Core/Src/board/i2c_bitbang.h b/Core/Src/board/i2c_bitbang.h
new file mode 100644
index 0000000..8fa0411
--- /dev/null
+++ b/Core/Src/board/i2c_bitbang.h
@@ -0,0 +1,106 @@
+/**********************************************************************
+ * Copyright: (C)2024 LingYun IoT System Studio
+ * Author: GuoWenxue<guowenxue@gmail.com>
+ *
+ * Description: The purpose of this code is to provide a simple C library,
+ * which providing software bit-bang of the I2C protocol on
+ * any GPIO pins for ISKBoard.
+ *
+ * ChangeLog:
+ * Version Date Author Description
+ * V1.0.0 2024.08.29 GuoWenxue Release initial version
+ *
+ ***********************************************************************/
+
+#ifndef __I2C_BITBANG_H_
+#define __I2C_BITBANG_H_
+
+#include "stm32l4xx_hal.h"
+
+#define I2C_CLK_STRETCH_TIMEOUT 6000
+
+/*
+ *+---------------------------------+
+ *| I2C GPIO port Level functions |
+ *+---------------------------------+
+ */
+
+/* GPIO port for I2C typedef */
+typedef struct i2c_gpio_s
+{
+ GPIO_TypeDef *group; /* GPIO group */
+ uint16_t pin; /* GPIO pin */
+} i2c_gpio_t;
+
+/* I2C bus typedef */
+typedef struct i2c_bus_s
+{
+ uint8_t addr; /* 7-bits slave address */
+ i2c_gpio_t scl; /* SCL GPIO pin */
+ i2c_gpio_t sda; /* SDA GPIO pin */
+} i2c_bus_t;
+
+
+/*
+ *+--------------------------------+
+ *| I2C High Level API functions |
+ *+--------------------------------+
+ */
+
+/* I2C bus error number */
+enum
+{
+ ERROR_NONE = 0x00, // no error
+ ERROR_PARM = 0x01, // parameter out of range error
+ ERROR_ACK = 0x02, // no acknowledgment error
+ ERROR_TIMEOUT = 0x03, // timeout error
+ ERROR_CHECKSUM = 0x04, // checksum mismatch error
+};
+
+/* Set I2C slave device 7-bits address in the bus to lock it */
+extern int i2c_lock(uint8_t addr);
+
+/* Clear I2C slave device 7-bits address in the bus to free it */
+extern void i2c_free(void);
+
+/* write data by to slave device */
+extern int i2c_write(uint8_t *data, int bytes);
+
+/* read data from slave device */
+extern int i2c_read(uint8_t *buf, int size);
+
+/*
+ *+--------------------------------+
+ *| I2C Low Level API functions |
+ *+--------------------------------+
+ */
+
+/* Send I2C start condition */
+extern void I2C_StartCondition(void);
+
+/* Send I2C stop condition */
+extern void I2C_StopCondition(void);
+
+/* Send I2C slave device 8-bits address */
+#define W_ADDR(x) ((x)<<1 ) /* I2C address bit[0]=0 means write */
+#define R_ADDR(x) ((x)<<1 | 1) /* I2C address bit[0]=1 means read */
+enum
+{
+ I2C_WR, /* Direction for write */
+ I2C_RD, /* Direction for read */
+};
+extern int I2C_SendAddress(uint8_t dir);
+
+/* Write a byte data to I2C slave device */
+extern int I2C_WriteByte(uint8_t txByte);
+
+/* Read a byte data from I2C slave device */
+enum
+{
+ ACK_NONE, /* ACK None */
+ ACK, /* ACK */
+ NAK, /* NAK */
+};
+extern int I2C_ReadByte(uint8_t *rxByte, uint8_t ack, uint32_t timeout);
+
+#endif /* __I2C_BITBANG_H_ */
diff --git a/Core/Src/board/sht20.c b/Core/Src/board/sht20.c
index 2d279e6..92f9780 100644
--- a/Core/Src/board/sht20.c
+++ b/Core/Src/board/sht20.c
@@ -11,7 +11,7 @@
***********************************************************************/
#include <stdio.h>
#include <string.h>
-#include "i2c.h"
+#include "i2c_bitbang.h"
#include "sht20.h"
#define CONFIG_DEBUG_SHT2X /* Enable SHT20 debug */
@@ -61,6 +61,8 @@
float temp, rh;
int rv;
+ i2c_lock(SHT2X_CHIPADDR);
+
if( sht2x_softreset() < 0 )
{
sht2x_print("SHT20 soft reset failed.\r\n");
@@ -94,6 +96,7 @@
*humdity=rh;
OUT:
+ i2c_free();
return rv;
}
@@ -104,8 +107,8 @@
sht2x_print("Start soft reset sht2x\r\n");
- rv=HAL_I2C_Master_Transmit(&hi2c1, SHT2X_CHIPADDR<<1, &command, 1, 0xFFFFFFFF);
- if( rv != HAL_OK )
+ rv=i2c_write(&command, 1);
+ if( rv )
{
sht2x_print("SHT2X send soft reset command 0x%0x failure: rv=0x%02x\r\n", command, rv);
return -rv;
@@ -161,7 +164,7 @@
return -2;
}
- if( HAL_I2C_Master_Transmit(&hi2c1, SHT2X_CHIPADDR<<1, &command, 1, 0xFFFFFFFF) != HAL_OK )
+ if( i2c_write(&command, 1) < 0 )
{
sht2x_print("SHT2X send measure command 0x%0x failure\r\n", command);
return -3;
@@ -176,7 +179,7 @@
{
memset(buf, 0, 3);
- if( HAL_OK == HAL_I2C_Master_Receive(&hi2c1, SHT2X_CHIPADDR<<1|1, buf, 3, 0xFFFFFFFF) )
+ if( !i2c_read(buf, 3) )
{
break;
}
diff --git a/Core/Src/i2c.c b/Core/Src/i2c.c
deleted file mode 100644
index 47f913a..0000000
--- a/Core/Src/i2c.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/* USER CODE BEGIN Header */
-/**
- ******************************************************************************
- * @file i2c.c
- * @brief This file provides code for the configuration
- * of the I2C instances.
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2025 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- */
-/* USER CODE END Header */
-/* Includes ------------------------------------------------------------------*/
-#include "i2c.h"
-
-/* USER CODE BEGIN 0 */
-
-/* USER CODE END 0 */
-
-I2C_HandleTypeDef hi2c1;
-
-/* I2C1 init function */
-void MX_I2C1_Init(void)
-{
-
- /* USER CODE BEGIN I2C1_Init 0 */
-
- /* USER CODE END I2C1_Init 0 */
-
- /* USER CODE BEGIN I2C1_Init 1 */
-
- /* USER CODE END I2C1_Init 1 */
- hi2c1.Instance = I2C1;
- hi2c1.Init.Timing = 0x10D19CE4;
- hi2c1.Init.OwnAddress1 = 0;
- hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
- hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
- hi2c1.Init.OwnAddress2 = 0;
- hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
- hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
- hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
- if (HAL_I2C_Init(&hi2c1) != HAL_OK)
- {
- Error_Handler();
- }
-
- /** Configure Analogue filter
- */
- if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
- {
- Error_Handler();
- }
-
- /** Configure Digital filter
- */
- if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
- {
- Error_Handler();
- }
- /* USER CODE BEGIN I2C1_Init 2 */
-
- /* USER CODE END I2C1_Init 2 */
-
-}
-
-void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
-{
-
- GPIO_InitTypeDef GPIO_InitStruct = {0};
- RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
- if(i2cHandle->Instance==I2C1)
- {
- /* USER CODE BEGIN I2C1_MspInit 0 */
-
- /* USER CODE END I2C1_MspInit 0 */
-
- /** Initializes the peripherals clock
- */
- PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
- PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
- if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
- {
- Error_Handler();
- }
-
- __HAL_RCC_GPIOB_CLK_ENABLE();
- /**I2C1 GPIO Configuration
- PB6 ------> I2C1_SCL
- PB7 ------> I2C1_SDA
- */
- GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
- GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
- GPIO_InitStruct.Pull = GPIO_NOPULL;
- GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
- GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
- HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
-
- /* I2C1 clock enable */
- __HAL_RCC_I2C1_CLK_ENABLE();
- /* USER CODE BEGIN I2C1_MspInit 1 */
-
- /* USER CODE END I2C1_MspInit 1 */
- }
-}
-
-void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
-{
-
- if(i2cHandle->Instance==I2C1)
- {
- /* USER CODE BEGIN I2C1_MspDeInit 0 */
-
- /* USER CODE END I2C1_MspDeInit 0 */
- /* Peripheral clock disable */
- __HAL_RCC_I2C1_CLK_DISABLE();
-
- /**I2C1 GPIO Configuration
- PB6 ------> I2C1_SCL
- PB7 ------> I2C1_SDA
- */
- HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6);
-
- HAL_GPIO_DeInit(GPIOB, GPIO_PIN_7);
-
- /* USER CODE BEGIN I2C1_MspDeInit 1 */
-
- /* USER CODE END I2C1_MspDeInit 1 */
- }
-}
-
-/* USER CODE BEGIN 1 */
-
-/* USER CODE END 1 */
diff --git a/Core/Src/main.c b/Core/Src/main.c
index 779c896..b10af19 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -19,7 +19,6 @@
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
-#include "i2c.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
@@ -96,7 +95,6 @@
MX_ADC1_Init();
MX_TIM6_Init();
MX_TIM1_Init();
- MX_I2C1_Init();
/* USER CODE BEGIN 2 */
beep_start(2, 300);
/* USER CODE END 2 */
diff --git a/ISKBoard.ioc b/ISKBoard.ioc
index 20118c1..d43f3be 100644
--- a/ISKBoard.ioc
+++ b/ISKBoard.ioc
@@ -18,20 +18,17 @@
CAD.provider=
File.Version=6
GPIO.groupedBy=Group By Peripherals
-I2C1.IPParameters=Timing
-I2C1.Timing=0x10D19CE4
KeepUserPlacement=false
Mcu.CPN=STM32L431RCT6
Mcu.Family=STM32L4
Mcu.IP0=ADC1
-Mcu.IP1=I2C1
-Mcu.IP2=NVIC
-Mcu.IP3=RCC
-Mcu.IP4=SYS
-Mcu.IP5=TIM1
-Mcu.IP6=TIM6
-Mcu.IP7=USART1
-Mcu.IPNb=8
+Mcu.IP1=NVIC
+Mcu.IP2=RCC
+Mcu.IP3=SYS
+Mcu.IP4=TIM1
+Mcu.IP5=TIM6
+Mcu.IP6=USART1
+Mcu.IPNb=7
Mcu.Name=STM32L431R(B-C)Tx
Mcu.Package=LQFP64
Mcu.Pin0=PH0-OSC_IN (PH0)
@@ -40,10 +37,8 @@
Mcu.Pin11=PA10
Mcu.Pin12=PA11
Mcu.Pin13=PD2
-Mcu.Pin14=PB6
-Mcu.Pin15=PB7
-Mcu.Pin16=VP_SYS_VS_Systick
-Mcu.Pin17=VP_TIM6_VS_ClockSourceINT
+Mcu.Pin14=VP_SYS_VS_Systick
+Mcu.Pin15=VP_TIM6_VS_ClockSourceINT
Mcu.Pin2=PB0
Mcu.Pin3=PB1
Mcu.Pin4=PB2
@@ -52,7 +47,7 @@
Mcu.Pin7=PB14
Mcu.Pin8=PC6
Mcu.Pin9=PC9
-Mcu.PinsNb=18
+Mcu.PinsNb=16
Mcu.ThirdPartyNb=0
Mcu.UserConstants=
Mcu.UserName=STM32L431RCTx
@@ -104,10 +99,6 @@
PB2.Locked=true
PB2.PinState=GPIO_PIN_SET
PB2.Signal=GPIO_Output
-PB6.Mode=I2C
-PB6.Signal=I2C1_SCL
-PB7.Mode=I2C
-PB7.Signal=I2C1_SDA
PC6.GPIOParameters=PinState
PC6.Locked=true
PC6.PinState=GPIO_PIN_SET
@@ -154,7 +145,7 @@
ProjectManager.UAScriptAfterPath=
ProjectManager.UAScriptBeforePath=
ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true,4-MX_ADC1_Init-ADC1-false-HAL-true,5-MX_TIM6_Init-TIM6-false-HAL-true,6-MX_TIM1_Init-TIM1-false-HAL-true,7-MX_I2C1_Init-I2C1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true,4-MX_ADC1_Init-ADC1-false-HAL-true,5-MX_TIM6_Init-TIM6-false-HAL-true,6-MX_TIM1_Init-TIM1-false-HAL-true
RCC.ADCFreq_Value=12000000
RCC.AHBFreq_Value=80000000
RCC.APB1Freq_Value=80000000
--
Gitblit v1.9.1