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Add SerialEvent() callback to loop processing (#7505)

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* Add SerialEvent() callback to loop processing

Match the AVR SerialEvent implicit callback.  Callback is executed
in normal user mode, not IRQ, so standard processing can be uses.

Fixes #752 after 5 years. :)

* Fix style
This commit is contained in:
Earle F. Philhower, III 2020-08-05 17:13:37 -07:00 committed by GitHub
parent 9afb084159
commit 3e567e9489
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3 changed files with 21 additions and 0 deletions
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16
cores/esp8266/HardwareSerial.cpp
View File

@ -32,6 +32,14 @@
#include "HardwareSerial.h"
#include "Esp.h"
// SerialEvent functions are weak, so when the user doesn't define them,
// the linker just sets their address to 0 (which is checked below).
// The Serialx_available is just a wrapper around Serialx.available(),
// but we can refer to it weakly so we don't pull in the entire
// HardwareSerial instance if the user doesn't also refer to it.
void serialEvent() __attribute__((weak));
HardwareSerial::HardwareSerial(int uart_nr)
: _uart_nr(uart_nr), _rx_size(256)
{}
@ -162,6 +170,14 @@ size_t HardwareSerial::readBytes(char* buffer, size_t size)
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_SERIAL)
HardwareSerial Serial(UART0);
// Executed at end of loop() processing when > 0 bytes available in the Serial port
void serialEventRun(void)
{
if (serialEvent && Serial.available()) {
serialEvent();
}
}
#endif
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_SERIAL1)
HardwareSerial Serial1(UART1);

2
cores/esp8266/HardwareSerial.h
View File

@ -207,4 +207,6 @@ protected:
extern HardwareSerial Serial;
extern HardwareSerial Serial1;
extern void serialEventRun(void) __attribute__((weak));
#endif

3
cores/esp8266/core_esp8266_main.cpp
View File

@ -195,6 +195,9 @@ static void loop_wrapper() {
}
loop();
loop_end();
if (serialEventRun) {
serialEventRun();
}
esp_schedule();
}