Bare metal blinker

[ewp]

@avelino

Any idea.

Hi @avelino here’s a link to the complete code you need using C.

Duo firmware V1.0.5 has been released! (with FreeRTOS source code)

Not elegant, but blink the on-board LED 5 times at start-up using the little core on FreeRTOS: // GPIOC24 is the blue LED. // The datasheet page 536 says: // Configure register GPIO_SWPORTA_DDR and set GPIO as input or output. // When the output pin is configured, write the output value to the // GPIO_SWPORTA_DR register to control the GPIO output level. #define GPIO2 0x03022000 #define GPIO_SWPORTA_DR 0x000 #define GPIO_SWPORTA_DDR 0x004 *(uint32_t*)(GPIO2|GPIO_SWPORTA_DDR)…