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Merge pull request #7871 from betaflight/revert-7603-smartaudio-lite-softserial

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Revert "SmartAudio Lite compatibility: Send 0x00 bit(s) (always) even with Soft Serial."
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Michael Keller 2019-03-27 05:23:42 +13:00 • committed by GitHub
commit ea454243bb
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1 changed files with 8 additions and 2 deletions
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10
src/main/io/vtx_smartaudio.c
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@ -450,7 +450,14 @@ static void saReceiveFrame(uint8_t c)
static void saSendFrame(uint8_t *buf, int len) static void saSendFrame(uint8_t *buf, int len)
{ {
if (!IS_RC_MODE_ACTIVE(BOXVTXCONTROLDISABLE)) { if (!IS_RC_MODE_ACTIVE(BOXVTXCONTROLDISABLE)) {
serialWrite(smartAudioSerialPort, 0x00); // Ensure line is low regardless of hardware pull-down capabilities. switch (smartAudioSerialPort->identifier) {
case SERIAL_PORT_SOFTSERIAL1:
case SERIAL_PORT_SOFTSERIAL2:
break;
default:
serialWrite(smartAudioSerialPort, 0x00); // Generate 1st start bit
break;
}
for (int i = 0 ; i < len ; i++) { for (int i = 0 ; i < len ; i++) {
serialWrite(smartAudioSerialPort, buf[i]); serialWrite(smartAudioSerialPort, buf[i]);
@ -461,7 +468,6 @@ static void saSendFrame(uint8_t *buf, int len)
sa_outstanding = SA_CMD_NONE; sa_outstanding = SA_CMD_NONE;
} }
serialWrite(smartAudioSerialPort, 0x00); // Pull the line low again after sending frame.
sa_lastTransmissionMs = millis(); sa_lastTransmissionMs = millis();
} }