Merge pull request zephyrproject-rtos#128 from KurtE/portentah7_blue_led

PortentaH7 - Stop the blue blink...

Author: facchinm

variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf

@@ -95,3 +95,4 @@ CONFIG_VIDEO_BUFFER_POOL_ALIGN=32
 CONFIG_VIDEO_BUFFER_USE_SHARED_MULTI_HEAP=y
 CONFIG_VIDEO_BUFFER_SMH_ATTRIBUTE=2
 CONFIG_FLASH=y
+CONFIG_STM32H7_BOOT_M4_AT_INIT=n 

variants/arduino_portenta_h7_stm32h747xx_m7/variant.cpp

@@ -1,8 +1,20 @@
 #include <zephyr/kernel.h>
+#include <zephyrInternal.h>
 
 void _on_1200_bps() {
     uint32_t tmp = (uint32_t) & (RTC->BKP0R);
     tmp += (RTC_BKP_DR0 * 4U);
     *(__IO uint32_t *)tmp = (uint32_t)0xDF59;
     NVIC_SystemReset();
 }
+
+void initVariant(void) {
+    // check the BLUE LED
+    /* Set led1 inactive since the Arduino bootloader leaves it active */
+    const struct gpio_dt_spec led2 = GPIO_DT_SPEC_GET(DT_ALIAS(led2), gpios);
+    if (!gpio_is_ready_dt(&led2)) {
+        return;
+    }
+
+    gpio_pin_configure_dt(&led2, GPIO_OUTPUT_INACTIVE);
+}