From 9d9f9dc034765aa4b1c5bd2d0aa4cd24e4110055 Mon Sep 17 00:00:00 2001
From: lonkaars <loek@pipeframe.xyz>
Date: Sun, 25 Sep 2022 15:21:12 +0200
Subject: c++ to c for stm32 firmware

---
 stm32f091/main.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 stm32f091/main.c

(limited to 'stm32f091/main.c')

diff --git a/stm32f091/main.c b/stm32f091/main.c
new file mode 100644
index 0000000..180240e
--- /dev/null
+++ b/stm32f091/main.c
@@ -0,0 +1,21 @@
+#include <stm32f0xx.h>
+#include <stdint.h>
+
+#define PORT GPIOA
+#define PIN 5
+
+int main() {
+	RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN;
+
+	PORT->MODER &= ~(0b11 << (PIN * 2));
+	PORT->MODER |= (0b01 << (PIN * 2));
+
+	uint8_t led = 1;
+
+	while (1) {
+		PORT->ODR &= ~(1 << PIN);
+		PORT->ODR |= (led << PIN);
+		led ^= 1;
+		for (unsigned long i = 0; i < 50000; i++) asm("nop");
+	}
+}
-- 
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