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drivers/memory/spiflash: Change from hard-coded soft SPI to generic SPI.

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The SPI flash driver now supports using an arbitrary SPI object to
communicate with the flash chip, and in particular can use a hardware SPI
peripheral.
This commit is contained in:
Damien George
2017-08-29 11:37:18 +10:00
parent d5336ba136
commit 613510bce8
3 changed files with 16 additions and 16 deletions
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9
drivers/memory/spiflash.c
View File

@@ -49,10 +49,8 @@ STATIC uint8_t buf[SECTOR_SIZE];
void mp_spiflash_init(mp_spiflash_t *self) {
mp_hal_pin_write(self->cs, 1);
mp_hal_pin_output(self->cs);
mp_hal_pin_write(self->spi.sck, 0);
mp_hal_pin_output(self->spi.sck);
mp_hal_pin_output(self->spi.mosi);
mp_hal_pin_input(self->spi.miso);
const mp_machine_spi_p_t *protocol = self->spi->type->protocol;
protocol->init(self->spi, 0, NULL, (mp_map_t*)&mp_const_empty_map);
}
STATIC void mp_spiflash_acquire_bus(mp_spiflash_t *self) {
@@ -66,7 +64,8 @@ STATIC void mp_spiflash_release_bus(mp_spiflash_t *self) {
}
STATIC void mp_spiflash_transfer(mp_spiflash_t *self, size_t len, const uint8_t *src, uint8_t *dest) {
mp_machine_soft_spi_transfer(&self->spi.base, len, src, dest);
const mp_machine_spi_p_t *protocol = self->spi->type->protocol;
protocol->transfer(self->spi, len, src, dest);
}
STATIC int mp_spiflash_wait_sr(mp_spiflash_t *self, uint8_t mask, uint8_t val, uint32_t timeout) {

3
drivers/memory/spiflash.h
View File

@@ -30,8 +30,7 @@
typedef struct _mp_spiflash_t {
mp_hal_pin_obj_t cs;
// TODO replace with generic SPI object
mp_machine_soft_spi_obj_t spi;
mp_obj_base_t *spi; // object must have protocol pointing to mp_machine_spi_p_t struct
} mp_spiflash_t;
void mp_spiflash_init(mp_spiflash_t *self);