Skip to content

SPI mutex lock #913

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

Draft
wants to merge 1 commit into
base: main
Choose a base branch
from
Draft

SPI mutex lock #913

Show file tree
Hide file tree
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
2 changes: 2 additions & 0 deletions libraries/SPI/SPI.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -81,9 +81,11 @@ void arduino::MbedSPI::beginTransaction(SPISettings settings) {
dev->obj->frequency(settings.getClockFreq());
this->settings = settings;
}
spiLockMutex.lock();
}

void arduino::MbedSPI::endTransaction(void) {
spiLockMutex.unlock();
// spinlock until transmission is over (if using ASYNC transfer)
}

Expand Down
2 changes: 2 additions & 0 deletions libraries/SPI/SPI.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@

#include "Arduino.h"
#include "api/HardwareSPI.h"
#include <Mutex.h>

typedef struct _mbed_spi mbed_spi;

Expand Down Expand Up @@ -50,6 +51,7 @@ class MbedSPI : public SPIClass
private:
SPISettings settings = SPISettings(0, MSBFIRST, SPI_MODE0);
_mbed_spi* dev = NULL;
rtos::Mutex spiLockMutex;
PinName _miso;
PinName _mosi;
PinName _sck;
Expand Down