Cleaned up GPIO code quite a bit.

1 files changed, 88 insertions, 0 deletions

diff --git a/include/gpio.h b/include/gpio.h
new file mode 100644
index 0000000..ab793f1
--- /dev/null
+++ b/include/gpio.h
@@ -0,0 +1,88 @@
+#pragma once
+
+#include "ch573/gpio.h"
+
+#define GPIO_PORT_A ch573_gpio__gpio_port_a
+#define GPIO_PORT_B ch573_gpio__gpio_port_b
+#define GPIO_PORT CH573_GPIO__GPIO_PORT_T_INTF
+#define GPIO_I CH573_GPIO__GPIO_T_INTF
+#define GPIO ch573_gpio__gpio
+
+#define IS_PORT_B 0x80
+
+typedef enum {
+  PIN_PA4 = 4,
+  PIN_PA5 = 5,
+
+  PIN_PA8 = 8,
+  PIN_PA9 = 9,
+  PIN_PA10 = 10,
+  PIN_PA11 = 11,
+  PIN_PA12 = 12,
+  PIN_PA13 = 13,
+  PIN_PA14 = 14,
+  PIN_PA15 = 15,
+
+  PIN_PB0 = IS_PORT_B | 0,
+  PIN_PB4 = IS_PORT_B | 4,
+  PIN_PB6 = IS_PORT_B | 6,
+  PIN_PB7 = IS_PORT_B | 7,
+
+  PIN_PB10 = IS_PORT_B | 10,
+  PIN_PB11 = IS_PORT_B | 11,
+  PIN_PB12 = IS_PORT_B | 12,
+  PIN_PB13 = IS_PORT_B | 13,
+  PIN_PB14 = IS_PORT_B | 14,
+  PIN_PB15 = IS_PORT_B | 15,
+
+  PIN_PB22 = IS_PORT_B | 8,
+  PIN_PB23 = IS_PORT_B | 9,
+} gpio_pin_t;
+
+typedef enum {
+  PIN_CFG_INPUT_FLOATING,
+  PIN_CFG_INPUT_PULL_UP,
+  PIN_CFG_INPUT_PULL_DOWN,
+  PIN_CFG_OUTPUT_5mA,
+  PIN_CFG_OUTPUT_20mA,
+} gpio_config_t;
+
+typedef enum {
+  AF_SPI = 8,
+  AF_UART1 = 5,
+  AF_UART0 = 4,
+  AF_TMR2 = 2,
+  AF_TMR1 = 1,
+  AF_TMR0 = 0,
+} alternate_function_t;
+
+typedef enum {
+  INT_MODE_FALLING_EDGE,
+  INT_MODE_RISING_EDGE,
+  INT_MODE_LEVEL_HIGH,
+  INT_MODE_LEVEL_LOW
+} interrupt_mode_t;
+
+typedef void (*gpio_callback_t)(gpio_pin_t pin);
+
+#define On_Gpio(arg)                                                          \
+  static void __local_on_gpio__(gpio_pin_t pin);                                \
+  __attribute__((__section__(                                                 \
+      ".gpio_callbacks"))) static volatile gpio_callback_t __gpio__position = \
+      __local_on_gpio__;                                                      \
+  static void __local_on_gpio__(arg)
+
+/** Configure the given gpio pin for .*/
+void configure_gpio(gpio_pin_t pin, gpio_config_t);
+
+/** Read the input value of the gpio. */
+int read_gpio(gpio_pin_t pin);
+
+/** Sets the gpio pin. */
+void set_gpio(gpio_pin_t pin, int high);
+
+/** Set or unset the peripheral to the alternate set of pins. */
+void enable_alternate_funciton(alternate_function_t af, int enable);
+
+/** Enables the interrupt for a with the provided interrupt mode. */
+void enable_gpio_interrupt(gpio_pin_t pin, interrupt_mode_t int_mode);