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esp8266: Convert mp_hal_pin_obj_t from pin ptr to simple integer. 

Most pin I/O can be done just knowing the pin number as a simple
integer, and it's more efficient this way (code size, speed) because it
doesn't require a memory lookup to get the pin id from the pin object.

If the full pin object is needed then it can be easily looked up in the
pin table.
This commit is contained in:
Damien George 2016-04-22 10:04:12 +01:00
parent 624738ca64
commit a2d5d84ecc
4 changed files with 21 additions and 16 deletions
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12
esp8266/esp_mphal.c
View File

@ -212,3 +212,15 @@ void dupterm_task_init() {
void mp_hal_signal_dupterm_input(void) {
system_os_post(DUPTERM_TASK_ID, 0, 0);
}
void mp_hal_pin_config_od(mp_hal_pin_obj_t pin_id) {
const pyb_pin_obj_t *pin = &pyb_pin_obj[pin_id];
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(pin->periph, pin->func);
GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin->phys_port)),
GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN(pin->phys_port)))
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_ENABLE)); // open drain
GPIO_REG_WRITE(GPIO_ENABLE_ADDRESS,
GPIO_REG_READ(GPIO_ENABLE_ADDRESS) | (1 << pin->phys_port));
ETS_GPIO_INTR_ENABLE();
}

21
esp8266/esp_mphal.h
View File

@ -63,20 +63,11 @@ void ets_event_poll(void);
#include "etshal.h"
#include "gpio.h"
#include "esp8266/modpyb.h"
#define mp_hal_pin_obj_t pyb_pin_obj_t*
#define mp_hal_get_pin_obj(o) mp_obj_get_pin_obj(o)
#define mp_hal_pin_config_od(p) do { \
ETS_GPIO_INTR_DISABLE(); \
PIN_FUNC_SELECT((p)->periph, (p)->func); \
GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN((p)->phys_port)), \
GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN((p)->phys_port))) \
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_ENABLE)); /* open drain */ \
GPIO_REG_WRITE(GPIO_ENABLE_ADDRESS, \
GPIO_REG_READ(GPIO_ENABLE_ADDRESS) | (1 << (p)->phys_port)); \
ETS_GPIO_INTR_ENABLE(); \
} while (0)
#define mp_hal_pin_low(p) gpio_output_set(0, 1 << (p)->phys_port, 1 << (p)->phys_port, 0)
#define mp_hal_pin_od_high(p) gpio_output_set(1 << (p)->phys_port, 0, 1 << (p)->phys_port, 0)
#define mp_hal_pin_read(p) GPIO_INPUT_GET(GPIO_ID_PIN((p)->phys_port))
#define mp_hal_pin_obj_t uint32_t
#define mp_hal_get_pin_obj(o) mp_obj_get_pin(o)
void mp_hal_pin_config_od(mp_hal_pin_obj_t pin);
#define mp_hal_pin_low(p) gpio_output_set(0, 1 << (p), 1 << (p), 0)
#define mp_hal_pin_od_high(p) gpio_output_set(1 << (p), 0, 1 << (p), 0)
#define mp_hal_pin_read(p) GPIO_INPUT_GET(GPIO_ID_PIN((p)))
#endif // _INCLUDED_MPHAL_H_

2
esp8266/modpyb.h
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@ -18,6 +18,8 @@ typedef struct _pyb_pin_obj_t {
uint32_t periph;
} pyb_pin_obj_t;
const pyb_pin_obj_t pyb_pin_obj[16 + 1];
void pin_init0(void);
void pin_intr_handler_iram(void *arg);
void pin_intr_handler(uint32_t);

2
esp8266/modpybpin.c
View File

@ -59,7 +59,7 @@ typedef struct _pin_irq_obj_t {
uint16_t phys_port;
} pin_irq_obj_t;
STATIC const pyb_pin_obj_t pyb_pin_obj[16 + 1] = {
const pyb_pin_obj_t pyb_pin_obj[16 + 1] = {
{{&pyb_pin_type}, 0, FUNC_GPIO0, PERIPHS_IO_MUX_GPIO0_U},
{{&pyb_pin_type}, 1, FUNC_GPIO1, PERIPHS_IO_MUX_U0TXD_U},
{{&pyb_pin_type}, 2, FUNC_GPIO2, PERIPHS_IO_MUX_GPIO2_U},