_WritePin(GPIOI, GPIO_PIN_8, GPIO_PIN_RESET); //HAL_GPIO_TogglePin(GPIOI, GPIO_PIN_8); //HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_15);
时间: 2024-08-16 14:01:57 浏览: 31
The provided code snippets are in the context of the HAL (Hardware Abstraction Layer) for the STM32 microcontroller family, specifically using the Pin Control library. `_WritePin(GPIOI, GPIO_PIN_8, GPIO_PIN_RESET)` is a function that writes a reset state to pin 8 on GPIOI port. This line sets the pin low or grounds it if it was previously high.
`HAL_GPIO_TogglePin(GPIOI, GPIO_PIN_8)` is used to toggle the state of pin 8 on GPIOI - meaning if it's currently high, it will be set low, and vice versa. This command performs a digital output level change.
Similarly,
`HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_15)` does the same operation but for pin 15 on GPIOC port.
Here's a brief explanation:
1. `GPIOI` refers to a specific General Purpose Input/Output (GPIO) peripheral block, which is an essential part of the STM32 microcontroller's hardware.
2. `GPIO_PIN_8` and `GPIO_PIN_15` are pin numbers within the GPIOI and GPIOC peripherals respectively. They define the particular pins being manipulated.
3. `GPIO_PIN_RESET` usually represents the logical low state (0), while `GPIO_PIN_SET` would represent the logical high state (1).
To put this into action, you'd need to include the appropriate headers and initialize the GPIO before calling these functions in your main program loop.