LPC54608的GPIO引脚所具有的中断功能分享

NXP管管 · 发表于 2020-5-26 16:43:39

LPC54608的GPIO引脚所具有的中断功能分享

完成下面的代码就可以实现：

void pint_int0_isr(pint_pin_int_t pintr, uint32_t pmatch_status)
{
LED_Ctrl(LED1, RVS);
}
void pint_int1_isr(pint_pin_int_t pintr, uint32_t pmatch_status)
{
LED_Ctrl(LED2, RVS);
}
在main()函数里面添加下面的初始化：
/* Connect trigger sources to PINT */
INPUTMUX_Init(INPUTMUX);
INPUTMUX_AttachSignal(INPUTMUX, kPINT_PinInt0, kINPUTMUX_GpioPort1Pin5ToPintsel);
INPUTMUX_AttachSignal(INPUTMUX, kPINT_PinInt1, kINPUTMUX_GpioPort1Pin18ToPintsel);
/* Turnoff clock to inputmux to save power. Clock is only needed to make changes */
INPUTMUX_Deinit(INPUTMUX);
/* Initialize PINT */
PINT_Init(PINT);
/* Setup Pin Interrupt 0 for rising edge */
PINT_PinInterruptConfig(PINT, kPINT_PinInt0, kPINT_PinIntEnableRiseEdge, pint_int0_isr);
/* Setup Pin Interrupt 1 for falling edge */
PINT_PinInterruptConfig(PINT, kPINT_PinInt1, kPINT_PinIntEnableFallEdge, pint_int1_isr);
/* Enable callbacks for PINT */
PINT_EnableCallback(PINT);

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下面的64个GPIO口都可以实现外部中断，在fsl_inputmux_connections.h中：

/*!< Pin Interrupt. */
kINPUTMUX_GpioPort0Pin0ToPintsel = 0U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin1ToPintsel = 1U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin2ToPintsel = 2U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin3ToPintsel = 3U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin4ToPintsel = 4U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin5ToPintsel = 5U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin6ToPintsel = 6U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin7ToPintsel = 7U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin8ToPintsel = 8U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin9ToPintsel = 9U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin10ToPintsel = 10U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin11ToPintsel = 11U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin12ToPintsel = 12U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin13ToPintsel = 13U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin14ToPintsel = 14U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin15ToPintsel = 15U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin16ToPintsel = 16U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin17ToPintsel = 17U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin18ToPintsel = 18U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin19ToPintsel = 19U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin20ToPintsel = 20U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin21ToPintsel = 21U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin22ToPintsel = 22U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin23ToPintsel = 23U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin24ToPintsel = 24U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin25ToPintsel = 25U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin26ToPintsel = 26U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin27ToPintsel = 27U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin28ToPintsel = 28U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin29ToPintsel = 29U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin30ToPintsel = 30U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort0Pin31ToPintsel = 31U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin0ToPintsel = 32U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin1ToPintsel = 33U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin2ToPintsel = 34U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin3ToPintsel = 35U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin4ToPintsel = 36U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin5ToPintsel = 37U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin6ToPintsel = 38U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin7ToPintsel = 39U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin8ToPintsel = 40U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin9ToPintsel = 41U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin10ToPintsel = 42U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin11ToPintsel = 43U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin12ToPintsel = 44U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin13ToPintsel = 45U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin14ToPintsel = 46U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin15ToPintsel = 47U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin16ToPintsel = 48U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin17ToPintsel = 49U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin18ToPintsel = 50U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin19ToPintsel = 51U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin20ToPintsel = 52U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin21ToPintsel = 53U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin22ToPintsel = 54U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin23ToPintsel = 55U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin24ToPintsel = 56U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin25ToPintsel = 57U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin26ToPintsel = 58U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin27ToPintsel = 59U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin28ToPintsel = 60U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin29ToPintsel = 61U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin30ToPintsel = 62U + (PINTSEL_PMUX_ID << PMUX_SHIFT),
kINPUTMUX_GpioPort1Pin31ToPintsel = 63U + (PINTSEL_PMUX_ID << PMUX_SHIFT),

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中断触发用的是P1_5,P1_18，用户可以自由设置

INPUTMUX_AttachSignal(INPUTMUX, kPINT_PinInt0, kINPUTMUX_GpioPort1Pin5ToPintsel);
INPUTMUX_AttachSignal(INPUTMUX, kPINT_PinInt1, kINPUTMUX_GpioPort1Pin18ToPintsel);

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stm1024 · 发表于 2020-5-27 11:38:57

感谢管管分享~~不过要吐槽一下的是，LPC系列的有用lpcopen的库，也有的用freescale的库……

[分享] LPC54608的GPIO引脚所具有的中断功能分享

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