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Merge pull request #7963 from dhalbert/esp-spi-baudrate 

Report SPI frequency accurately on Espressif
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Mark 2023-05-11 17:13:39 -05:00 committed by GitHub
parent c75a768b59 d99b0634f7
commit 6b703ea733
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 2 deletions
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6
ports/espressif/common-hal/busio/SPI.c
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@ -56,8 +56,10 @@ void spi_reset(void) {
static void set_spi_config(busio_spi_obj_t *self,
uint32_t baudrate, uint8_t polarity, uint8_t phase, uint8_t bits) {
// 128 is a 50% duty cycle.
const int closest_clock = spi_get_actual_clock(APB_CLK_FREQ, baudrate, 128);
const spi_device_interface_config_t device_config = {
.clock_speed_hz = baudrate,
.clock_speed_hz = closest_clock,
.mode = phase | (polarity << 1),
.spics_io_num = -1, // No CS pin
.queue_size = MAX_SPI_TRANSACTIONS,
@ -67,7 +69,7 @@ static void set_spi_config(busio_spi_obj_t *self,
if (result != ESP_OK) {
mp_raise_RuntimeError(translate("SPI configuration failed"));
}
self->baudrate = baudrate;
self->baudrate = closest_clock;
self->polarity = polarity;
self->phase = phase;
self->bits = bits;