diff options
Diffstat (limited to '02-usart/include/core/gpio.h')
| -rw-r--r-- | 02-usart/include/core/gpio.h | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/02-usart/include/core/gpio.h b/02-usart/include/core/gpio.h deleted file mode 100644 index 54963b1..0000000 --- a/02-usart/include/core/gpio.h +++ /dev/null @@ -1,326 +0,0 @@ -#ifndef CORE_GPIO_H__ -#define CORE_GPIO_H__ - -#include "common.h" -#include "rcc.h" - -#include <stdint.h> - -/* - * Possible GPIO ports. - */ -typedef enum { - GPIO_PORT_A = 0, - GPIO_PORT_B = 1, - GPIO_PORT_C = 2, - GPIO_PORT_D = 3 -} gpio_port_number_t; - -/* - * Structure defining the layout of the layout of the GPIO registers on the - * stm32l432 development board. - */ -typedef struct GPIO_PORT_STR { - /* Mode of each GPIO pin for this GPIO port. */ -#define gpio_mode0 (3 << 0) -#define gpio_mode1 (3 << 2) -#define gpio_mode2 (3 << 4) -#define gpio_mode3 (3 << 6) -#define gpio_mode4 (3 << 8) -#define gpio_mode5 (3 << 10) -#define gpio_mode6 (3 << 12) -#define gpio_mode7 (3 << 14) -#define gpio_mode8 (3 << 16) -#define gpio_mode9 (3 << 18) -#define gpio_mode10 (3 << 20) -#define gpio_mode11 (3 << 22) -#define gpio_mode12 (3 << 24) -#define gpio_mode13 (3 << 26) -#define gpio_mode14 (3 << 28) -#define gpio_mode15 (3 << 30) - __IO uint32_t mode_r; /* Mode register */ - - /* Output type for each gpio pin in this port. */ -#define gpio_otype0 (1 << 0) -#define gpio_otype1 (1 << 1) -#define gpio_otype2 (1 << 2) -#define gpio_otype3 (1 << 3) -#define gpio_otype4 (1 << 4) -#define gpio_otype5 (1 << 5) -#define gpio_otype6 (1 << 6) -#define gpio_otype7 (1 << 7) -#define gpio_otype8 (1 << 8) -#define gpio_otype9 (1 << 9) -#define gpio_otype10 (1 << 10) -#define gpio_otype11 (1 << 11) -#define gpio_otype12 (1 << 12) -#define gpio_otype13 (1 << 13) -#define gpio_otype14 (1 << 14) -#define gpio_otype15 (1 << 15) - __IO uint32_t otype_r; - - /* GPIO port output speed. */ -#define gpio_ospeed0 (3 << 0) -#define gpio_ospeed1 (3 << 2) -#define gpio_ospeed2 (3 << 4) -#define gpio_ospeed3 (3 << 6) -#define gpio_ospeed4 (3 << 8) -#define gpio_ospeed5 (3 << 10) -#define gpio_ospeed6 (3 << 12) -#define gpio_ospeed7 (3 << 14) -#define gpio_ospeed8 (3 << 16) -#define gpio_ospeed9 (3 << 18) -#define gpio_ospeed10 (3 << 20) -#define gpio_ospeed11 (3 << 22) -#define gpio_ospeed12 (3 << 24) -#define gpio_ospeed13 (3 << 26) -#define gpio_ospeed14 (3 << 28) -#define gpio_ospeed15 (3 << 30) - __IO uint32_t ospeed_r; - - /* GPIO port pull-up/pull-down register */ -#define gpio_pupd0 (3 << 0) -#define gpio_pupd1 (3 << 2) -#define gpio_pupd2 (3 << 4) -#define gpio_pupd3 (3 << 6) -#define gpio_pupd4 (3 << 8) -#define gpio_pupd5 (3 << 10) -#define gpio_pupd6 (3 << 12) -#define gpio_pupd7 (3 << 14) -#define gpio_pupd8 (3 << 16) -#define gpio_pupd9 (3 << 18) -#define gpio_pupd10 (3 << 20) -#define gpio_pupd11 (3 << 22) -#define gpio_pupd12 (3 << 24) -#define gpio_pupd13 (3 << 26) -#define gpio_pupd14 (3 << 28) -#define gpio_pupd15 (3 << 30) - __IO uint32_t pupd_r; - - /* GPIO port input data register. */ -#define gpio_idr0 (1 << 0) -#define gpio_idr1 (1 << 1) -#define gpio_idr2 (1 << 2) -#define gpio_idr3 (1 << 3) -#define gpio_idr4 (1 << 4) -#define gpio_idr5 (1 << 5) -#define gpio_idr6 (1 << 6) -#define gpio_idr7 (1 << 7) -#define gpio_idr8 (1 << 8) -#define gpio_idr9 (1 << 9) -#define gpio_idr10 (1 << 10) -#define gpio_idr11 (1 << 11) -#define gpio_idr12 (1 << 12) -#define gpio_idr13 (1 << 13) -#define gpio_idr14 (1 << 14) -#define gpio_idr15 (1 << 15) - __IO uint32_t id_r; - - /* GPIO port output data register. */ -#define gpio_odr0 (1 << 0) -#define gpio_odr1 (1 << 1) -#define gpio_odr2 (1 << 2) -#define gpio_odr3 (1 << 3) -#define gpio_odr4 (1 << 4) -#define gpio_odr5 (1 << 5) -#define gpio_odr6 (1 << 6) -#define gpio_odr7 (1 << 7) -#define gpio_odr8 (1 << 8) -#define gpio_odr9 (1 << 9) -#define gpio_odr10 (1 << 10) -#define gpio_odr11 (1 << 11) -#define gpio_odr12 (1 << 12) -#define gpio_odr13 (1 << 13) -#define gpio_odr14 (1 << 14) -#define gpio_odr15 (1 << 15) - __IO uint32_t output_r; - - /* GPIO port bit set/reset register. */ -#define gpio_bs0 (1 << 0) -#define gpio_bs1 (1 << 1) -#define gpio_bs2 (1 << 2) -#define gpio_bs3 (1 << 3) -#define gpio_bs4 (1 << 4) -#define gpio_bs5 (1 << 5) -#define gpio_bs6 (1 << 6) -#define gpio_bs7 (1 << 7) -#define gpio_bs8 (1 << 8) -#define gpio_bs9 (1 << 9) -#define gpio_bs10 (1 << 10) -#define gpio_bs11 (1 << 11) -#define gpio_bs12 (1 << 12) -#define gpio_bs13 (1 << 13) -#define gpio_bs14 (1 << 14) -#define gpio_bs15 (1 << 15) -#define gpio_br0 (1 << 16) -#define gpio_br1 (1 << 17) -#define gpio_br2 (1 << 18) -#define gpio_br3 (1 << 19) -#define gpio_br4 (1 << 20) -#define gpio_br5 (1 << 21) -#define gpio_br6 (1 << 22) -#define gpio_br7 (1 << 23) -#define gpio_br8 (1 << 24) -#define gpio_br9 (1 << 25) -#define gpio_br10 (1 << 26) -#define gpio_br11 (1 << 27) -#define gpio_br12 (1 << 28) -#define gpio_br13 (1 << 29) -#define gpio_br14 (1 << 30) -#define gpio_br15 (1 << 31) - __IO uint32_t bsr_r; - - /* GPIO port configuration lock register. */ -#define gpio_lck0 (1 << 0) -#define gpio_lck1 (1 << 1) -#define gpio_lck2 (1 << 2) -#define gpio_lck3 (1 << 3) -#define gpio_lck4 (1 << 4) -#define gpio_lck5 (1 << 5) -#define gpio_lck6 (1 << 6) -#define gpio_lck7 (1 << 7) -#define gpio_lck8 (1 << 8) -#define gpio_lck9 (1 << 9) -#define gpio_lck10 (1 << 10) -#define gpio_lck11 (1 << 11) -#define gpio_lck12 (1 << 12) -#define gpio_lck13 (1 << 13) -#define gpio_lck14 (1 << 14) -#define gpio_lck15 (1 << 15) -#define gpio_lckk (1 << 16) - __IO uint32_t lck_r; - - /* Alternate function low-register. */ -#define gpio_afsel0 (0xF << 0) -#define gpio_afsel1 (0xF << 4) -#define gpio_afsel2 (0xF << 8) -#define gpio_afsel3 (0xF << 12) -#define gpio_afsel4 (0xF << 16) -#define gpio_afsel5 (0xF << 20) -#define gpio_afsel6 (0xF << 24) -#define gpio_afsel7 (0xF << 28) - __IO uint32_t af_rl; - - /* Alternate function high-register. */ -#define gpio_afsel8 (0xF << 0) -#define gpio_afsel9 (0xF << 4) -#define gpio_afsel10 (0xF << 8) -#define gpio_afsel11 (0xF << 12) -#define gpio_afsel12 (0xF << 16) -#define gpio_afsel13 (0xF << 20) -#define gpio_afsel14 (0xF << 24) -#define gpio_afsel15 (0xF << 28) - __IO uint32_t af_rh; -} PACKED gpio_port_t; - -/* - * Enum defining the PINs in a GPIO port. Each port has 16 pins to use in - * the stm32l432. - */ -typedef enum GPIO_PIN_ENUM { - PIN_0 = 0, - PIN_1 = 1, - PIN_2 = 2, - PIN_3 = 3, - PIN_4 = 4, - PIN_5 = 5, - PIN_6 = 6, - PIN_7 = 7, - PIN_8 = 8, - PIN_9 = 9, - PIN_10 = 10, - PIN_11 = 11, - PIN_12 = 12, - PIN_13 = 13, - PIN_14 = 14, - PIN_15 = 15 -} gpio_pin_t; - -/* Alternate function number. */ -typedef enum { - AFN_0 = 0, - AFN_1 = 1, - AFN_2 = 2, - AFN_3 = 3, - AFN_4 = 4, - AFN_5 = 5, - AFN_6 = 6, - AFN_7 = 7, - AFN_8 = 8, - AFN_9 = 9, - AFN_10 = 10, - AFN_11 = 11, - AFN_12 = 12, - AFN_13 = 13, - AFN_14 = 14, - AFN_15 = 15 -} alternate_function_t; - -/* - * Enum defining the pin modes that are possible. - */ -typedef enum { - MODE_INPUT = 0, - MODE_OUTPUT = 1, - MODE_ALTERNATE = 2, - MODE_ANALOG = 3 -} gpio_pin_mode_t; - -/* - * Enum defining the pin speeds that are possible. - */ -typedef enum { - SPEED_2MHZ = 0, - SPEED_10MHZ = 1, - SPEED_50MHZ = 3, -} speed_t; - -/* - * Structure defining an OUTPUT pin. Structurally equivalent to the input pin, - * but can be used in a slightly type-safe manner. - */ -typedef struct { - __IO gpio_port_t* gpio_port; - gpio_pin_t pin; -} gpio_output_pin_t; - -/* - * Sets the mode on a GPIO pin. - * - * gpio_port: the gpio port to use. - * pin: the pin number to set. - * pin_mode: the mode to set the pin to. - */ -void set_gpio_pin_mode( - __IO gpio_port_t* gpio_port, gpio_pin_t pin, gpio_pin_mode_t pin_mode); - -/* - * Sets the given GPIO pin to be an output pin. Returns an output_pin struct - * corresponding to - */ -gpio_output_pin_t set_gpio_pin_output( - __IO gpio_port_t* gpio_port, gpio_pin_t pin); - -/* - * Sets an output pin on or off. - * - * pin: the pin to toggle. - * onoff: 0 for off, non-zero of on. - */ -void set_gpio_output_pin(gpio_output_pin_t pin, bool onoff); - -#define pin_on(p) set_gpio_output_pin(p, 1) - -#define pin_off(p) set_gpio_output_pin(p, 0) - -/* - * Enables a GPIO port and returns a reference to the register definition - * of that GPIO port. - */ -__IO gpio_port_t* enable_gpio(gpio_port_number_t number); - -/* Sets the alternate function for a GPIO pin. */ -void set_gpio_alternate_function( - __IO gpio_port_t* port, gpio_pin_t gpio_pin, alternate_function_t afn); - -#endif /* CORE_GPIO_H__ */ |