initrd, lcd, file cleanup

1 files changed, 45 insertions, 0 deletions

diff --git a/include/gpio.h b/include/gpio.h
new file mode 100644
index 0000000..25b32fe
--- /dev/null
+++ b/include/gpio.h
@@ -0,0 +1,45 @@
+#ifndef GPIO_H_
+#define GPIO_H_
+
+#include <stm32l476xx.h>
+
+#define GPIO_PORT(p, b) GPIO##p, b
+
+enum GPIO_MODE
+{
+	INPUT = 0,
+	OUTPUT,
+	ALTERNATE,
+	ANALOG
+};
+
+enum GPIO_TYPE
+{
+	PUSHPULL = 0,
+	OPENDRAIN
+};
+
+enum GPIO_SPEED
+{
+	LOW = 0,
+	MEDIUM,
+	HIGH,
+	VERYHIGH
+};
+
+enum GPIO_PUPD
+{
+	NOPUPD,
+	PULLUP,
+	PULLDOWN
+};
+
+void gpio_init(void);
+
+void gpio_pupd(GPIO_TypeDef *port, uint8_t pin, uint8_t pupd);
+void gpio_type(GPIO_TypeDef *port, uint8_t pin, uint8_t type);
+void gpio_mode(GPIO_TypeDef *port, uint8_t pin, uint8_t mode);
+void gpio_dout(GPIO_TypeDef *port, uint8_t pin, uint8_t val);
+uint8_t gpio_din(GPIO_TypeDef *port, uint8_t pin);
+
+#endif // GPIO_H_