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impl_dsled.c

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#include "devs_internal.h"

#if JD_LED_STRIP

static uint8_t is_done;

static void led_strip_done(void) {

devs_fiber_await_done(&is_done);

}

static void throw_led_strip_error(devs_ctx_t *ctx, void *userdata) {

int code = (int)(intptr_t)userdata;

if (code == -100)

devs_throw_range_error(ctx, "LED busy");

else

devs_throw_range_error(ctx, "LED error: %d", code);

}

#endif

void fun2_DeviceScript_ledStripSend(devs_ctx_t *ctx) {

#if JD_LED_STRIP

int pin = devs_arg_int(ctx, 0);

value_t tx = devs_arg(ctx, 1);

unsigned tx_sz;

const void *tx_ptr = devs_bufferish_data(ctx, tx, &tx_sz);

if (!tx_ptr)

devs_throw_expecting_error_ext(ctx, "TX buffer", tx);

else {

devs_fiber_t *fib = ctx->curr_fiber;

devs_fiber_await(fib, &is_done);

int r = devs_led_strip_send(ctx, pin, tx_ptr, tx_sz, led_strip_done);

if (r) {

// we've been already de-scheduled - arrange for exception on resume

fib->resume_cb = throw_led_strip_error;

fib->resume_data = (void *)r;

devs_fiber_await_done(&is_done); // schedule resume

}

}

#else

devs_throw_not_supported_error(ctx, "ledStripSend");

#endif

}