Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Set SPI CLK pin pull up/down in SPI Configure based on SPI polarity config #6067

Merged
merged 1 commit into from
Feb 22, 2022
Merged

Set SPI CLK pin pull up/down in SPI Configure based on SPI polarity config #6067

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions ports/stm/common-hal/busio/SPI.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,15 @@ bool common_hal_busio_spi_configure(busio_spi_obj_t *self,
self->handle.Init.CLKPolarity = (polarity) ? SPI_POLARITY_HIGH : SPI_POLARITY_LOW;
self->handle.Init.CLKPhase = (phase) ? SPI_PHASE_2EDGE : SPI_PHASE_1EDGE;

// Set SCK pull up or down based on SPI CLK Polarity
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = pin_mask(self->sck->pin->number);
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = (polarity) ? GPIO_PULLUP : GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = self->sck->altfn_index;
HAL_GPIO_Init(pin_port(self->sck->pin->port), &GPIO_InitStruct);

self->handle.Init.BaudRatePrescaler = stm32_baud_to_spi_div(baudrate, &self->prescaler,
get_busclock(self->handle.Instance));

Expand Down