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esp8266: Change software SPI driver to use general pin HAL.

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This commit is contained in:
Damien George 2016-04-22 10:44:06 +01:00
parent 67a6d31955
commit b372156f74
2 changed files with 18 additions and 17 deletions
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1
esp8266/esp_mphal.h
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@ -75,5 +75,6 @@ void mp_hal_pin_config_od(mp_hal_pin_obj_t pin);
else { gpio_output_set(1 << (p), 0, 1 << (p), 0); } \
} while (0)
#define mp_hal_pin_read(p) pin_get(p)
#define mp_hal_pin_write(p, v) pin_set((p), (v))
#endif // _INCLUDED_MPHAL_H_

34
esp8266/modpybspi.c
View File

@ -35,16 +35,16 @@
#include "py/runtime.h"
#include "py/stream.h"
#include "modpyb.h"
#include "py/mphal.h"
typedef struct _pyb_spi_obj_t {
mp_obj_base_t base;
uint32_t baudrate;
uint8_t polarity;
uint8_t phase;
pyb_pin_obj_t *sck;
pyb_pin_obj_t *mosi;
pyb_pin_obj_t *miso;
mp_hal_pin_obj_t sck;
mp_hal_pin_obj_t mosi;
mp_hal_pin_obj_t miso;
} pyb_spi_obj_t;
STATIC void mp_hal_spi_transfer(pyb_spi_obj_t *self, size_t src_len, const uint8_t *src_buf, size_t dest_len, uint8_t *dest_buf) {
@ -59,20 +59,20 @@ STATIC void mp_hal_spi_transfer(pyb_spi_obj_t *self, size_t src_len, const uint8
}
uint8_t data_in = 0;
for (int j = 0; j < 8; ++j, data_out <<= 1) {
pin_set(self->mosi->phys_port, (data_out >> 7) & 1);
mp_hal_pin_write(self->mosi, (data_out >> 7) & 1);
if (self->phase == 0) {
ets_delay_us(delay_half);
pin_set(self->sck->phys_port, 1 - self->polarity);
mp_hal_pin_write(self->sck, 1 - self->polarity);
} else {
pin_set(self->sck->phys_port, 1 - self->polarity);
mp_hal_pin_write(self->sck, 1 - self->polarity);
ets_delay_us(delay_half);
}
data_in = (data_in << 1) | pin_get(self->miso->phys_port);
data_in = (data_in << 1) | mp_hal_pin_read(self->miso);
if (self->phase == 0) {
ets_delay_us(delay_half);
pin_set(self->sck->phys_port, self->polarity);
mp_hal_pin_write(self->sck, self->polarity);
} else {
pin_set(self->sck->phys_port, self->polarity);
mp_hal_pin_write(self->sck, self->polarity);
ets_delay_us(delay_half);
}
}
@ -90,7 +90,7 @@ STATIC void mp_hal_spi_transfer(pyb_spi_obj_t *self, size_t src_len, const uint8
STATIC void pyb_spi_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
pyb_spi_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_printf(print, "SPI(baudrate=%u, polarity=%u, phase=%u, sck=%u, mosi=%u, miso=%u)",
self->baudrate, self->polarity, self->phase, self->sck->phys_port, self->mosi->phys_port, self->miso->phys_port);
self->baudrate, self->polarity, self->phase, self->sck, self->mosi, self->miso);
}
STATIC void pyb_spi_init_helper(pyb_spi_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
@ -116,13 +116,13 @@ STATIC void pyb_spi_init_helper(pyb_spi_obj_t *self, size_t n_args, const mp_obj
self->phase = args[ARG_phase].u_int;
}
if (args[ARG_sck].u_obj != MP_OBJ_NULL) {
self->sck = mp_obj_get_pin_obj(args[ARG_sck].u_obj);
self->sck = mp_hal_get_pin_obj(args[ARG_sck].u_obj);
}
if (args[ARG_mosi].u_obj != MP_OBJ_NULL) {
self->mosi = mp_obj_get_pin_obj(args[ARG_mosi].u_obj);
self->mosi = mp_hal_get_pin_obj(args[ARG_mosi].u_obj);
}
if (args[ARG_miso].u_obj != MP_OBJ_NULL) {
self->miso = mp_obj_get_pin_obj(args[ARG_miso].u_obj);
self->miso = mp_hal_get_pin_obj(args[ARG_miso].u_obj);
}
}
@ -134,9 +134,9 @@ STATIC mp_obj_t pyb_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_
self->baudrate = 500000;
self->polarity = 0;
self->phase = 0;
self->sck = NULL;
self->mosi = NULL;
self->miso = NULL;
self->sck = 14;
self->mosi = 13;
self->miso = 12;
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
pyb_spi_init_helper(self, n_args, args, &kw_args);