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amiro-os / devices / DiWheelDrive / exti.cpp @ 58fe0e0b

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#include <ch.hpp>
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#include <hal.h>
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#include <board.h>
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#include "exti.hpp"
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volatile uint32_t shutdown_now = 0x00000000u; // = BL_SHUTDOWN_NONE in main.cpp
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EXTConfig extcfg = {
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  {
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    /* channel 0 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 1 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 2 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 3 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 4 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 5 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 6 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 7 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 8 */
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    {
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      /* mode */ EXT_MODE_GPIOC | EXT_CH_MODE_AUTOSTART | EXT_CH_MODE_FALLING_EDGE,
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      /* cb   */ power_down_cb,
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    },
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    /* channel 9 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 10 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 11 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 12 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 13 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 14 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 15 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 16 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 17 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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    /* channel 18 */
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    {
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      /* mode */ EXT_CH_MODE_DISABLED,
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      /* cb   */ NULL,
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    },
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  }
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};
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void power_down_cb(EXTDriver *extp, expchannel_t channel) {
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  (void) extp;
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  (void) channel;
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  // make sure we don't accidentally power down when somebody tries to wake us
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  if (!palReadPad(GPIOC, GPIOC_SYS_PD_N))
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    palWritePad(GPIOC, GPIOC_SYS_INT_N, PAL_LOW); // indicate that the module needs some time to shut down
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    shutdown_now = 5; // = SHUTDOWN_HANDLE_REQUEST in main.cpp
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}