\rv32m1_vega\driver_examples\gpio\input_interrupt 仿照这么这个例子改为其他按键，例如SW3，一直不行？

[hyq666]

\rv32m1_vega\driver_examples\gpio\input_interrupt 仿照这么这个例子改为其他按键，例如SW3，一直不行，什么原因？

[hyq666]

void BOARD_InitPins(void) {
CLOCK_EnableClock(kCLOCK_PortA);
CLOCK_EnableClock(kCLOCK_PortC); /* Clock Gate Control: 0x01u */
CLOCK_EnableClock(kCLOCK_PortE); /* Clock Gate Control: 0x01u */

const port_pin_config_t porte12_pinL12_config = {
kPORT_PullDisable, /* Internal pull-up/down resistor is disabled */
kPORT_FastSlewRate, /* Fast slew rate is configured */
kPORT_PassiveFilterDisable, /* Passive filter is disabled */
kPORT_OpenDrainDisable, /* Open drain is disabled */
kPORT_LowDriveStrength, /* Low drive strength is configured */
kPORT_MuxAsGpio, /* Pin is configured as PTE12 */
kPORT_UnlockRegister /* Pin Control Register fields [15:0] are not locked */

};
PORT_SetPinConfig(PORTE, PIN12_IDX, &porte12_pinL12_config); /* PORTE12 (pin L12) is configured as PTE12 */
PORT_SetPinMux(PORTA, PIN24_IDX, kPORT_MuxAsGpio); /* PORTA24 (pin D6) is configured as PTA24 */
PORT_SetPinMux(PORTC, PIN7_IDX, kPORT_MuxAlt3); /* PORTC7 (pin N2) is configured as LPUART0_RX */
PORT_SetPinMux(PORTC, PIN8_IDX, kPORT_MuxAlt3); /* PORTC8 (pin P3) is configured as LPUART0_TX */
}

 

 

#define BOARD_SW5_GPIO GPIOE
#define BOARD_SW5_PORT PORTE
#define BOARD_SW5_GPIO_PIN 12U
#define BOARD_SW5_IRQ PORTE_IRQn
#define BOARD_SW5_IRQ_HANDLER PORTE_IRQHandler
#define BOARD_SW5_NAME “SW5”

/* Board led color mapping */
#define BOARD_LED_RED_GPIO GPIOA
#define BOARD_LED_RED_GPIO_PIN 24U

/*! @brief The TPM channel used for board */
#define BOARD_TPM_CHANNEL 0U

[hyq666]

只能使用例子中SW2吗？

[hyq666]

// LSU error
jal x0, LSU_Handler 程序跳到这里不走了是什么错误？？？？

[Howard]

• GPIOE是 Rapid/Fast GPIO，还需要打开Rapid/Fast GPIO 的clock，所以在BOARD_InitPins（）中要enable rgpio clock

void BOARD_InitPins(void) {
CLOCK_EnableClock(kCLOCK_PortA); /* Clock Gate Control: 0x01u */
CLOCK_EnableClock(kCLOCK_PortC); /* Clock Gate Control: 0x01u */
CLOCK_EnableClock(kCLOCK_PortE); /* Clock Gate Control: 0x01u */
CLOCK_EnableClock(kCLOCK_Rgpio1);

……

}

• 由于RISC-V中断只支持32个外部硬件中断信号，所以更多的中断信号是通过INTMUX模块来复用的。所以要初始化INTMUX这个模块。所以要在程序中添加INTMUX 驱动，即加入rv32m1_sdk_riscv\devices\RV32M1\drivers\fsl_intmux.c文件，然后在gpio_input_interrupt.c文件中 #include “fsl_intmux.h”，并且在初始化GPIOE中断加入红色代码行

/* Init input switch GPIO. */

INTMUX_Init(INTMUX0);
INTMUX_EnableInterrupt(INTMUX0, 0, PORTE_IRQn);

PORT_SetPinInterruptConfig(BOARD_SW3_PORT, BOARD_SW3_GPIO_PIN, kPORT_InterruptFallingEdge);
EnableIRQ(BOARD_SW3_IRQ);
GPIO_PinInit(BOARD_SW3_GPIO, BOARD_SW3_GPIO_PIN, &sw_config);

• 其它修改对照SW2做对应修改

 

[作者]

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