44 lines
1.0 KiB
Markdown
44 lines
1.0 KiB
Markdown
# Soft I2C For STM32 using HAL
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That is Edited version of [Original version](https://schkorea.tistory.com/437) for stm32
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**usage:**
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define GPIO in `i2c_sw.h`:
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```c
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#define GPIO_SW_I2C1_SCL GPIOB
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#define GPIO_SW_I2C1_SDA GPIOB
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#define GPIO_SW_I2C1_SCL_PIN GPIO_PIN_13
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#define GPIO_SW_I2C1_SDA_PIN GPIO_PIN_14
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```
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That example is for `stm32f103` , for use other micro replace `#include "stm32f1xx_hal_gpio.h"` in `i2c_sw.h`.
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This library has the ability to activate more than 10 software I2C , which have been commented in this library, but by default only one of them has been activated.
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**Example:**
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```c
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#include "i2c_sw.h"
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int main()
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{
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SW_I2C_initial();
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i2c_port_initial(SW_I2C1);
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while(1)
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{
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//Write DATA to Reg at Reg_Addr from I2C_Add Device connected to SW_I2C1
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SW_I2C_WriteControl_8Bit(SW_I2C1,I2C_Add,Reg_Addr,DATA);
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//Read DATA at Reg_Add from I2C_Add Device connected to SW_I2C1
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DATA=SW_I2C_ReadControl_8Bit(SW_I2C1,I2C_Add,Reg_Add);
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}
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}
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```
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