From 38f0e84d3b5da56c1441f2f779246ccf7b23d5c4 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Thu, 18 Feb 2021 23:01:57 +0100
Subject: add minimal LM4F120H5QR (LM4F120XL Stellaris Launchpad) support

---
 include/arch/lm4f120h5qr-stellaris/driver/gpio.h   | 63 ++++++++++++++++++++++
 include/arch/lm4f120h5qr-stellaris/driver/stdout.h | 24 +++++++++
 include/arch/lm4f120h5qr-stellaris/driver/uptime.h | 32 +++++++++++
 .../arch/lm4f120h5qr-stellaris/lm4f_cpp_wrapper.h  | 16 ++++++
 4 files changed, 135 insertions(+)
 create mode 100644 include/arch/lm4f120h5qr-stellaris/driver/gpio.h
 create mode 100644 include/arch/lm4f120h5qr-stellaris/driver/stdout.h
 create mode 100644 include/arch/lm4f120h5qr-stellaris/driver/uptime.h
 create mode 100644 include/arch/lm4f120h5qr-stellaris/lm4f_cpp_wrapper.h

(limited to 'include/arch/lm4f120h5qr-stellaris')

diff --git a/include/arch/lm4f120h5qr-stellaris/driver/gpio.h b/include/arch/lm4f120h5qr-stellaris/driver/gpio.h
new file mode 100644
index 0000000..f71164e
--- /dev/null
+++ b/include/arch/lm4f120h5qr-stellaris/driver/gpio.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef GPIO_H
+#define GPIO_H
+
+extern "C" {
+#include "lm4f_cpp_wrapper.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,
+			pb_0, pb_1, pb_2, pb_3, pb_4, pb_5, pb_6, pb_7,
+			pc_0, pc_1, pc_2, pc_3, pc_4, pc_5, pc_6, pc_7,
+			pd_0, pd_1, pd_2, pd_3, pd_4, pd_5, pd_6, pd_7,
+			pe_0, pe_1, pe_2, pe_3, pe_4, pe_5, pe_6, pe_7,
+			pf_0, pf_1, pf_2, pf_3, pf_4,
+			PIN_INVALID
+		};
+
+		inline void setup() {
+			mp_gpio_setup();
+		}
+		inline void led_on(unsigned char id) {
+			mp_gpio_write(pf_1 + id, 1);
+		}
+		inline void led_off(unsigned char id) {
+			mp_gpio_write(pf_1 + id, 0);
+		}
+		inline void led_toggle(unsigned char id) {
+			mp_gpio_write(pf_1 + id, !mp_gpio_read(pf_1 + id));
+		}
+		inline void input(unsigned char const pin) {
+			mp_gpio_input(pin);
+		}
+		inline void input(unsigned char const pin, unsigned char const pull) {
+		}
+		inline void output(unsigned char const pin) {
+			mp_gpio_output(pin);
+		}
+		/*
+		inline void output(unsigned char const pin, unsigned char const value) {
+		}*/
+		inline unsigned int read(unsigned char const pin) {
+			return mp_gpio_read(pin);
+		}
+		inline void write(unsigned char const pin, unsigned char value) {
+			mp_gpio_write(pin, value);
+		}
+};
+
+extern GPIO gpio;
+
+#endif
diff --git a/include/arch/lm4f120h5qr-stellaris/driver/stdout.h b/include/arch/lm4f120h5qr-stellaris/driver/stdout.h
new file mode 100644
index 0000000..09b18c1
--- /dev/null
+++ b/include/arch/lm4f120h5qr-stellaris/driver/stdout.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#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
diff --git a/include/arch/lm4f120h5qr-stellaris/driver/uptime.h b/include/arch/lm4f120h5qr-stellaris/driver/uptime.h
new file mode 100644
index 0000000..4031e61
--- /dev/null
+++ b/include/arch/lm4f120h5qr-stellaris/driver/uptime.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef UPTIME_H
+#define UPTIME_H
+
+#include <stdint.h>
+
+class Uptime {
+	private:
+		Uptime(const Uptime &copy);
+#ifdef TIMER_S
+		uint32_t seconds;
+#endif
+
+	public:
+#ifdef TIMER_S
+		Uptime () : seconds(0) {}
+#else
+		Uptime () {}
+#endif
+#ifdef TIMER_S
+		inline uint32_t get_s() { return seconds; }
+		inline void tick_s() { seconds++; }
+#endif
+};
+
+extern Uptime uptime;
+
+#endif
diff --git a/include/arch/lm4f120h5qr-stellaris/lm4f_cpp_wrapper.h b/include/arch/lm4f120h5qr-stellaris/lm4f_cpp_wrapper.h
new file mode 100644
index 0000000..739f575
--- /dev/null
+++ b/include/arch/lm4f120h5qr-stellaris/lm4f_cpp_wrapper.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+void arch_clock_init();
+void arch_init_loop();
+
+void mp_uart_setup();
+void mp_uart_send_blocking(char c);
+
+void mp_gpio_setup();
+void mp_gpio_input(unsigned char const pin);
+void mp_gpio_output(unsigned char const pin);
+unsigned int mp_gpio_read(unsigned char const pin);
+void mp_gpio_write(unsigned char const pin, unsigned char value);
-- 
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