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HardwareSerial - availableForWrite() support #1226

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Merged
merged 2 commits into from
Apr 6, 2018
Merged

HardwareSerial - availableForWrite() support #1226

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761b5a5
HardwareSerial - availableForWrite() support
mtabu Mar 16, 2018
daddfcf
fix indentation errors (tab vs space)
mtabu Mar 16, 2018
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4 changes: 4 additions & 0 deletions cores/esp32/HardwareSerial.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,10 @@ int HardwareSerial::available(void)
{
return uartAvailable(_uart);
}
int HardwareSerial::availableForWrite(void)
{
return uartAvailableForWrite(_uart);
}

int HardwareSerial::peek(void)
{
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1 change: 1 addition & 0 deletions cores/esp32/HardwareSerial.h
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Expand Up @@ -40,6 +40,7 @@ class HardwareSerial: public Stream
void begin(unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1, bool invert=false);
void end();
int available(void);
int availableForWrite(void);
int peek(void);
int read(void);
void flush(void);
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8 changes: 8 additions & 0 deletions cores/esp32/esp32-hal-uart.c
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Expand Up @@ -248,6 +248,14 @@ uint32_t uartAvailable(uart_t* uart)
return uxQueueMessagesWaiting(uart->queue);
}

uint32_t uartAvailableForWrite(uart_t* uart)
{
if(uart == NULL) {
return 0;
}
return 0x7f - uart->dev->status.txfifo_cnt;
}

uint8_t uartRead(uart_t* uart)
{
if(uart == NULL || uart->queue == NULL) {
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1 change: 1 addition & 0 deletions cores/esp32/esp32-hal-uart.h
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Expand Up @@ -55,6 +55,7 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx
void uartEnd(uart_t* uart);

uint32_t uartAvailable(uart_t* uart);
uint32_t uartAvailableForWrite(uart_t* uart);
uint8_t uartRead(uart_t* uart);
uint8_t uartPeek(uart_t* uart);

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