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[HAL] Modified SPI to use shared mutex 

Modified the SPI class to use a shared mutex for all instances. This is
consistent with I2C and others.
pull/2297/head
neilt6 2016-07-28 08:57:59 -06:00
parent 36468c9acb
commit e80b16628d
2 changed files with 5 additions and 3 deletions
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3
hal/api/SPI.h
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@ -21,6 +21,7 @@
#if DEVICE_SPI #if DEVICE_SPI
#include "spi_api.h" #include "spi_api.h"
#include "SingletonPtr.h"
#if DEVICE_SPI_ASYNCH #if DEVICE_SPI_ASYNCH
#include "CThunk.h" #include "CThunk.h"
@ -246,7 +247,7 @@ protected:
void aquire(void); void aquire(void);
static SPI *_owner; static SPI *_owner;
PlatformMutex _mutex; static SingletonPtr<PlatformMutex> _mutex;
int _bits; int _bits;
int _mode; int _mode;
int _hz; int _hz;

5
hal/common/SPI.cpp
View File

@ -57,6 +57,7 @@ void SPI::frequency(int hz) {
} }
SPI* SPI::_owner = NULL; SPI* SPI::_owner = NULL;
SingletonPtr<PlatformMutex> SPI::_mutex;
// ignore the fact there are multiple physical spis, and always update if it wasnt us last // ignore the fact there are multiple physical spis, and always update if it wasnt us last
void SPI::aquire() { void SPI::aquire() {
@ -78,11 +79,11 @@ int SPI::write(int value) {
} }
void SPI::lock() { void SPI::lock() {
_mutex.lock(); _mutex->lock();
} }
void SPI::unlock() { void SPI::unlock() {
_mutex.unlock(); _mutex->unlock();
} }
#if DEVICE_SPI_ASYNCH #if DEVICE_SPI_ASYNCH