diff options
Diffstat (limited to 'esp8266/modpybspi.c')
| -rw-r--r-- | esp8266/modpybspi.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/esp8266/modpybspi.c b/esp8266/modpybspi.c index 4c4b843c5..b9650954f 100644 --- a/esp8266/modpybspi.c +++ b/esp8266/modpybspi.c @@ -47,17 +47,12 @@ typedef struct _pyb_spi_obj_t { mp_hal_pin_obj_t miso; } pyb_spi_obj_t; -STATIC void mp_hal_spi_transfer(mp_obj_base_t *self_in, size_t src_len, const uint8_t *src_buf, size_t dest_len, uint8_t *dest_buf) { +STATIC void mp_hal_spi_transfer(mp_obj_base_t *self_in, size_t len, const uint8_t *src, uint8_t *dest) { pyb_spi_obj_t *self = (pyb_spi_obj_t*)self_in; // only MSB transfer is implemented uint32_t delay_half = 500000 / self->baudrate + 1; - for (size_t i = 0; i < src_len || i < dest_len; ++i) { - uint8_t data_out; - if (src_len == 1) { - data_out = src_buf[0]; - } else { - data_out = src_buf[i]; - } + for (size_t i = 0; i < len; ++i) { + uint8_t data_out = src[i]; uint8_t data_in = 0; for (int j = 0; j < 8; ++j, data_out <<= 1) { mp_hal_pin_write(self->mosi, (data_out >> 7) & 1); @@ -77,8 +72,8 @@ STATIC void mp_hal_spi_transfer(mp_obj_base_t *self_in, size_t src_len, const ui ets_delay_us(delay_half); } } - if (dest_len != 0) { - dest_buf[i] = data_in; + if (dest != NULL) { + dest[i] = data_in; } // make sure pending tasks have a chance to run ets_loop_iter(); |