Moved action to top level.

Removed old iterations of the project and moved the files from 02-usart
to the root directory since that's the sole place where the action is
and that subproject has outgrown its initial title.

1 files changed, 0 insertions, 187 deletions

diff --git a/02-usart/include/kern/gpio/gpio_manager.h b/02-usart/include/kern/gpio/gpio_manager.h
deleted file mode 100644
index 922a423..0000000
--- a/02-usart/include/kern/gpio/gpio_manager.h
+++ /dev/null
@@ -1,187 +0,0 @@
-#ifndef KERN_GPIO_GPIO_MANAGE_H_
-#define KERN_GPIO_GPIO_MANAGE_H_
-
-#include "kern/common.h"
-#include "arch/stm32l4xxx/peripherals/gpio.h"
-
-#define GPIO_ERROR_IN_USE 1
-#define GPIO_ERROR_INVALID_PIN_FOR_ALTERNATE_FUNCTION 2
-#define GPIO_ERROR_INVALID_PIN 3
-
-typedef enum {
-/* Creates vaules GPIO_PIN_<port><num> i.e. GPIO_PIN_A0 */
-#define PORT(p, pn) \
-  GPIO_PIN_P ## p ## pn,
-#include "arch/stm32l4xxx/peripherals/tables/stm32l432xx/gpio/port_table.inc"
-#undef PORT
-
-  N_GPIO_PINS
-} gpio_pin_t;
-
-/* Alternate functions. */
-typedef enum {
-#define AFN(fn, ...) \
-  GPIO_ALTERNATE_FUNCTION_ ## fn,
-#include "arch/stm32l4xxx/peripherals/tables/stm32l432xx/gpio/afn_table.inc"
-#undef AFN
-  GPIO_ALTERNATE_FUNCTION_EVENTOUT,
-} gpio_alternate_function_t;
-
-#define gpio_pin_for_alternate_function(af) ((af) / 16)
-#define gpio_pin_out_of_range(pin) \
-  ((pin) < 0 || (pin) >= N_GPIO_PINS)
-
-typedef enum {
-  GPIO_PORT_A,
-  GPIO_PORT_B,
-  GPIO_PORT_C,
-  GPIO_PORT_D,
-  GPIO_PORT_E,
-  GPIO_PORT_F,
-  GPIO_PORT_G,
-  GPIO_PORT_H,
-  GPIO_PORT_I,
-
-  N_GPIO_PORTS,
-} gpio_port_t;
-
-typedef enum {
-  GPIO_MODE_INPUT,
-  GPIO_MODE_OUTPUT,
-  GPIO_MODE_ALTERNATE,
-  GPIO_MODE_ANALOG
-} gpio_mode_t;
-
-/*
- * Enum defining the pin speeds that are possible.
- */
-typedef enum {
-  SPEED_2MHZ = 0,
-  SPEED_10MHZ = 1,
-  SPEED_50MHZ = 3,
-} gpio_speed_t;
-
-typedef enum {
-  GPIO_OUTPUT_TYPE_PUSH_PULL,
-  GPIO_OUTPUT_TYPE_OPEN_DRAIN
-} gpio_output_type_t;
-
-typedef enum {
-  GPIO_OUTPUT_SPEED_LOW,
-  GPIO_OUTPUT_SPEED_MEDIUM,
-  GPIO_OUTPUT_SPEED_HIGH,
-  GPIO_OUTPUT_SPEED_VERY_HIGH,
-} gpio_output_speed_t;
-
-typedef enum {
-  GPIO_PULL_DIR_NONE,
-  GPIO_PULL_DIR_UP,
-  GPIO_PULL_DIR_DOWN,
-} gpio_pull_dir_t;
-
-/* Returns the appropriate gpio_port for the provided pin. */
-inline static gpio_port_t get_port_for_pin(gpio_pin_t pin)
-{
-  switch (pin) {
-#define PORT(p, pn) \
-    case GPIO_PIN_P ## p ## pn: return GPIO_PORT_ ## p;
-#include "arch/stm32l4xxx/peripherals/tables/stm32l432xx/gpio/port_table.inc"
-#undef PORT
-    case N_GPIO_PINS: return N_GPIO_PORTS;
-  }
-
-  /* Should be unreachable. */
-}
-
-#define DEFAULT_GPIO_OPTS_OUTPUT \
-  (gpio_pin_opts_t) { \
-    .mode = GPIO_MODE_OUTPUT, \
-    .pull_dir = GPIO_PULL_DIR_DOWN, \
-    .output_opts.speed = GPIO_OUTPUT_SPEED_MEDIUM, \
-    .output_opts.type = GPIO_OUTPUT_TYPE_PUSH_PULL, \
-  }
-
-#define DEFAULT_GPIO_OPTS_INPUT \
-  (gpio_pin_opts_t) { \
-    .mode = GPIO_MODE_OUTPUT, \
-    .pull_dir = GPIO_PULL_DIR_DOWN, \
-  }
-
-typedef struct {
-  gpio_mode_t      mode;
-  gpio_pull_dir_t  pull_dir;
-
-  union {
-    struct {
-    } input_opts;
-
-    struct {
-      gpio_output_speed_t        speed;
-      gpio_output_type_t  type;
-    } output_opts;
-
-    struct {
-      uint8_t function;
-    } alternate_opts;
-
-    struct {
-    } analog_opts;
-  };
-} gpio_pin_opts_t;
-
-/* Differentiates at compile-time from the a gpio_pin_t enum value and a pin
- * that's been reserved. */
-typedef struct {
-  gpio_pin_t v_;
-} gpio_reserved_pin_t;
-
-/* Returns a pointer to the GPIO pin bus and offset.  This is useful for when
- * raw access to the values are needed. I.e. time critical applications. */
-void get_gpio_pin_port_off(
-    gpio_pin_t pin, gpio_port_config_t** out_cfg, int* out_off);
-
-/* Sets the given GPIO pin to high. */
-void set_gpio_pin_high(gpio_reserved_pin_t pin);
-
-/* Sets the given GPIO pin to low. */
-void set_gpio_pin_low(gpio_reserved_pin_t pin);
-
-/** returns true if a GPIO pin is in use. */
-bool gpio_pin_in_use(gpio_pin_t pin);
-
-/*
- * Reserve the provided GPIO pin using the opts provided.
- *
- * sets error_out to GPIO_ERROR_IN_USE if the GPIO pin could not be reserved
- * because it already has been reserved.
- *
- * The function will automatically enable the correct GPIO port bus.
- */
-gpio_reserved_pin_t reserve_gpio_pin(
-    gpio_pin_t pin, gpio_pin_opts_t* opts, int* error_out);
-
-/* Enables and returns the pin reserved for the alternate function.
- *
- * If the `hint` parameter is defined (non -1) the manager will try
- * to reserve that pin for the alternate function and fail if it can't.
- *
- * If `hint` is -1 then the first available pin for that alternate function
- * will be reserved and returned.
- *
- *
- */
-gpio_reserved_pin_t gpio_enable_alternate_function(
-    gpio_alternate_function_t fn,
-    gpio_pin_t hint,
-    int* error_out);
-
-/*
- * Releases the GPIO pin so it can be reserved again in the future.
- *
- * The pin is reset during this process and if there are no more reserved pins
- * on the corresponding port this function will disable the port. (last one out
- * gets the lights.).
- */
-void release_gpio_pin(gpio_reserved_pin_t gpio_pin);
-
-#endif /* KERN_GPIO_GPIO_MANAGE_H_ */