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Add nRF24 receive message buffering (#538)

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* Add critical section support

Allows defining a code block which is executed as a critical section.
Supports AVR, ESP8266 & SAMD.

* Add receive message buffering

When MY_RF24_IRQ_PIN is defined (and connected), a buffer will be used
to retrieve & store messages received by nRF24 as fast as possible.
This reduces the chance of losing messages due to a busy
microcontroller.
nRF24 SPI rx message transfer is running from interrupt context when
MY_RF24_IRQ_PIN is defined. If this transfer takes too long, serial
characters received will get lost. Therefore serial rx is enabled during
SPI transfer of nRF messages.

Limitations: Only AVR/SAMD & nRF24L01+ combinations can buffer rx
messages.
nRF24L01+ IRQ pin should be connected to AVR.
Tested on W5100- & Serial-gateway.

SAMD has not been tested yet!

* Fix Doxygen warnings

* Fix more Doxygen warnings
This commit is contained in:
Embedded Innovation
2016-08-02 22:20:25 +02:00
committed by Olivier
parent 4695cc71dd
commit 99973a346e
12 changed files with 483 additions and 9 deletions
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core/MyHwSAMD.h
+24
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@@ -58,4 +58,28 @@ uint8_t hwReadConfig(int adr);
#define hwWriteConfig(__adr, __value) ( __value = __value)
#define hwReadConfig(__adr) (0)
*/
/**
* Disable all interrupts.
* Helper function for MY_CRITICAL_SECTION.
*/
static __inline__ uint8_t __disableIntsRetVal(void)
{
__disable_irq();
return 1;
}
/**
* Restore priority mask register.
* Helper function for MY_CRITICAL_SECTION.
*/
static __inline__ void __priMaskRestore(const uint32_t *priMask)
{
__set_PRIMASK(*priMask);
}
#ifndef DOXYGEN
#define MY_CRITICAL_SECTION for ( uint32_t __savePriMask __attribute__((__cleanup__(__priMaskRestore))) = __get_PRIMASK(), __ToDo = __disableIntsRetVal(); __ToDo ; __ToDo = 0 )
#endif /* DOXYGEN */
#endif // #ifdef ARDUINO_ARCH_SAMD