3_c_onboard_LED_blink - Edison Arduino Code Broken (w/ Fix below)

Manish_P_ — Sun, 22 Feb 2015 03:38:03 GMT

Surprised at the quality of the sample code - what's provided on Intel's site does not work. I have included the fix below in bold (works with libmraa version 0.5.4+ in IDE)

int main(int argc, char **argv) {
mraa_platform_t platform = mraa_get_platform_type();

... <code cut out>

switch (platform) {
... <code cut out>

   case MRAA_INTEL_EDISON_FAB_C:
       strcpy(board_name, "Edison");
       gpio = mraa_gpio_init(10);
       break;

... <code cut out>

}

Call mraa_gpio_init with mraa Pin 10 as argument, NOT 13 as in the example. Traced through schematics and Edison pinout to decipher that the LED is connected to DIG13_1P8, which is connected to GP109, which is mapped to mraa pin #10 (the sample had pin #13)

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3_c_onboard_LED_blink - Edison Arduino Code Broken (w/ Fix below)