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Increase GPS FIFO Buffer Size for RP2040 ()

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As discovered and tested by @Mictronics, default Serial FIFO size
on the Pico is 32bytes, which is not enough for GPS messages.

This patch increases the Serial GPS FIFO buffer size to 256
for the RP2040 Architecture

fixes https://github.com/meshtastic/firmware/issues/3989
This commit is contained in:
Tom Fifield 2024-09-17 19:48:56 +08:00 committed by GitHub
parent a967dd52f3
commit be306cc384
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 16 additions and 3 deletions

17
src/gps/GPS.cpp
View File

@ -26,6 +26,8 @@
#if defined(NRF52840_XXAA) || defined(NRF52833_XXAA) || defined(ARCH_ESP32) || defined(ARCH_PORTDUINO)
HardwareSerial *GPS::_serial_gps = &Serial1;
#elif defined(ARCH_RP2040)
SerialUART *GPS::_serial_gps = &Serial1;
#else
HardwareSerial *GPS::_serial_gps = NULL;
#endif
@ -1198,9 +1200,13 @@ int GPS::prepareDeepSleep(void *unused)
GnssModel_t GPS::probe(int serialSpeed)
{
#if defined(ARCH_NRF52) || defined(ARCH_PORTDUINO) || defined(ARCH_RP2040) || defined(ARCH_STM32WL)
#if defined(ARCH_NRF52) || defined(ARCH_PORTDUINO) || defined(ARCH_STM32WL)
_serial_gps->end();
_serial_gps->begin(serialSpeed);
#elif defined(ARCH_RP2040)
_serial_gps->end();
_serial_gps->setFIFOSize(256);
_serial_gps->begin(serialSpeed);
#else
if (_serial_gps->baudRate() != serialSpeed) {
LOG_DEBUG("Setting Baud to %i\n", serialSpeed);
@ -1265,9 +1271,13 @@ GnssModel_t GPS::probe(int serialSpeed)
_serial_gps->write(_message_prt, sizeof(_message_prt));
delay(500);
serialSpeed = 9600;
#if defined(ARCH_NRF52) || defined(ARCH_PORTDUINO) || defined(ARCH_RP2040) || defined(ARCH_STM32WL)
#if defined(ARCH_NRF52) || defined(ARCH_PORTDUINO) || defined(ARCH_STM32WL)
_serial_gps->end();
_serial_gps->begin(serialSpeed);
#elif defined(ARCH_RP2040)
_serial_gps->end();
_serial_gps->setFIFOSize(256);
_serial_gps->begin(serialSpeed);
#else
_serial_gps->updateBaudRate(serialSpeed);
#endif
@ -1428,6 +1438,9 @@ GPS *GPS::createGps()
LOG_DEBUG("Using GPIO%d for GPS RX\n", new_gps->rx_gpio);
LOG_DEBUG("Using GPIO%d for GPS TX\n", new_gps->tx_gpio);
_serial_gps->begin(GPS_BAUDRATE, SERIAL_8N1, new_gps->rx_gpio, new_gps->tx_gpio);
#elif defined(ARCH_RP2040)
_serial_gps->setFIFOSize(256);
_serial_gps->begin(GPS_BAUDRATE);
#else
_serial_gps->begin(GPS_BAUDRATE);
#endif

2
src/gps/GPS.h
View File

@ -102,7 +102,7 @@ class GPS : private concurrency::OSThread
public:
/** If !NULL we will use this serial port to construct our GPS */
#if defined(RPI_PICO_WAVESHARE)
#if defined(ARCH_RP2040)
static SerialUART *_serial_gps;
#else
static HardwareSerial *_serial_gps;