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spi_software: add a delay on mode change

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Signed-off-by: Timofey Titovets <nefelim4ag@gmail.com>
This commit is contained in:
Timofey Titovets 2025-05-22 23:29:51 +02:00 committed by KevinOConnor
parent 14685bf77f
commit 28a4baf95c
1 changed files with 9 additions and 6 deletions
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15
src/spi_software.c
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@ -40,18 +40,21 @@ DECL_COMMAND(command_spi_set_sw_bus,
"spi_set_sw_bus oid=%c miso_pin=%u mosi_pin=%u sclk_pin=%u" "spi_set_sw_bus oid=%c miso_pin=%u mosi_pin=%u sclk_pin=%u"
" mode=%u pulse_ticks=%u"); " mode=%u pulse_ticks=%u");
void
spi_software_prepare(struct spi_software *ss)
{
gpio_out_write(ss->sclk, ss->mode & 0x02);
}
static void static void
spi_delay(uint32_t end) spi_delay(uint32_t end)
{ {
while (timer_is_before(timer_read_time(), end)); while (timer_is_before(timer_read_time(), end));
} }
void
spi_software_prepare(struct spi_software *ss)
{
gpio_out_write(ss->sclk, ss->mode & 0x02);
uint32_t end = timer_read_time() + ss->sck_ticks;
spi_delay(end);
}
void void
spi_software_transfer(struct spi_software *ss, uint8_t receive_data spi_software_transfer(struct spi_software *ss, uint8_t receive_data
, uint8_t len, uint8_t *data) , uint8_t len, uint8_t *data)