From 8458978ad5512dc813ac700d59983c56917fa205 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 26 Jul 2020 11:55:32 +0200
Subject: Add minimal STM32F446RE Nucleo support. No interrupts yet.

---
 include/arch/stm32f446re-nucleo/driver/gpio.h   | 63 +++++++++++++++++++++++++
 include/arch/stm32f446re-nucleo/driver/stdout.h | 19 ++++++++
 2 files changed, 82 insertions(+)
 create mode 100644 include/arch/stm32f446re-nucleo/driver/gpio.h
 create mode 100644 include/arch/stm32f446re-nucleo/driver/stdout.h

(limited to 'include')

diff --git a/include/arch/stm32f446re-nucleo/driver/gpio.h b/include/arch/stm32f446re-nucleo/driver/gpio.h
new file mode 100644
index 0000000..378a84f
--- /dev/null
+++ b/include/arch/stm32f446re-nucleo/driver/gpio.h
@@ -0,0 +1,63 @@
+#ifndef GPIO_H
+#define GPIO_H
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+
+class GPIO {
+	private:
+		GPIO(const GPIO &copy);
+
+	public:
+		GPIO () {}
+
+		enum Pin : unsigned char {
+			pa_0 = 0, pa_1, pa_2, pa_3, pa_4, pa_5, pa_6, pa_7,
+			pa_8, pa_9, pa_10, pa_11, pa_12, pa_13, pa_14, pa_15,
+			pb_0, pb_1, pb_2, pb_3, pb_4, pb_5, pb_6, pb_7,
+			pb_8, pb_9, pb_10, pb_11, pb_12, pb_13, pb_14, pb_15,
+			pc_0, pc_1, pc_2, pc_3, pc_4, pc_5, pc_6, pc_7,
+			pc_8, pc_9, pc_10, pc_11, pc_12, pc_13, pc_14, pc_15,
+			PIN_INVALID
+		};
+
+		inline void setup() {
+			rcc_periph_clock_enable(RCC_GPIOA);
+			rcc_periph_clock_enable(RCC_GPIOB);
+			rcc_periph_clock_enable(RCC_GPIOC);
+
+			// Set LED as output
+			gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO5);
+		}
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+		inline void led_on(unsigned char id) {
+			gpio_set(GPIOA, GPIO5);
+		}
+		inline void led_off(unsigned char id) {
+			gpio_clear(GPIOA, GPIO5);
+		}
+		inline void led_toggle(unsigned char id) {
+			gpio_toggle(GPIOA, GPIO5);
+		}
+#pragma GCC diagnostic pop
+		/*
+		inline void input(unsigned char const pin) {
+		}
+		inline void input(unsigned char const pin, unsigned char const pull) {
+		}
+		inline void output(unsigned char const pin) {
+		}
+		inline void output(unsigned char const pin, unsigned char const value) {
+		}
+		inline unsigned char read(unsigned char const pin) {
+		}
+		inline void write(unsigned char const pin, unsigned char value) {
+		}
+		inline void write_mask(unsigned char const pin_base, unsigned char set_mask, unsigned char clear_mask) {
+		}
+		*/
+};
+
+extern GPIO gpio;
+
+#endif
diff --git a/include/arch/stm32f446re-nucleo/driver/stdout.h b/include/arch/stm32f446re-nucleo/driver/stdout.h
new file mode 100644
index 0000000..2eb669d
--- /dev/null
+++ b/include/arch/stm32f446re-nucleo/driver/stdout.h
@@ -0,0 +1,19 @@
+#ifndef STANDARDOUTPUT_H
+#define STANDARDOUTPUT_H
+
+#include "object/outputstream.h"
+
+class StandardOutput : public OutputStream {
+	private:
+		StandardOutput(const StandardOutput &copy);
+
+	public:
+		StandardOutput () {}
+		void setup();
+
+		virtual void put(char c) override;
+};
+
+extern StandardOutput kout;
+
+#endif
-- 
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