Roy_01
46 lines
1.2 KiB
Markdown
46 lines
1.2 KiB
Markdown
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## GPIO Interrupt
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> This example is used to trig gpio interrupt.
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+ Select GPIO Port
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```
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// in main.c
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/**
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* Select Interrupt pin
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*/
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#define GPIO_INPUT_PORTx GPIOB
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#define GPIO_INPUT_PINx GPIO_Pin_00
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#define CONFIG_GPIO_IRQ GPIOB_IRQn
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```
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+ Select GPIO interrupt trigger mode
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```
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// in main.c
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/**
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* Select Interrupt source
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*/
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#define GPIO_INTERRUPT_TRIGGER GPIO_Trigger_Level
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#define GPIO_INTERRUPT_POLARITY GPIO_Polarity_Low_Fall
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```
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## Note-Log
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Use serial port with baudrate 115200 8bit, no parity check.
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+ Select UART log pin
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```
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// in syslog.c
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#define CONFIG_LOG_DEVICE_TX_IO_PORTx GPIOA
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#define CONFIG_LOG_DEVICE_TX_IO_PINx GPIO_Pin_15
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#define CONFIG_LOG_DEVICE_TX_IO_AF GPIO_AF_1
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```
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* If you want to use `PB1` as an interrupt, set IO to normal IO.(RST pin by default)
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```
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SYSCFG_SetRstPin2NormalIO(true); // set RST IO to normal IO
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```
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* If you want to use `PB[2:5]` as an interrupt, set IO to normal IO, and Restore IO to JTAG IO at the end.(JTAG pin by default)
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```
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SYSCFG_SetICEPin2NormalIO(true); // set JTAG IO to normal IO
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SYSCFG_SetICEPin2NormalIO(false); // set normal IO to JTAG IO
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``` |