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Set a baud rate limit for cdc-acm internally #577

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Merged
merged 1 commit into from
Oct 26, 2017
Merged

Set a baud rate limit for cdc-acm internally #577

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7 changes: 6 additions & 1 deletion cores/arduino/CDCSerialClass.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -86,8 +86,13 @@ void CDCSerialClass::begin(const uint32_t dwBaudRate, const uint8_t config)
}


void CDCSerialClass::init(const uint32_t dwBaudRate, const uint8_t modeReg)
void CDCSerialClass::init(uint32_t dwBaudRate, const uint8_t modeReg)
{
/* Set a max internal baud rate due to the limitation of the
* Inter Processor Mailbox */
if(dwBaudRate > 115200)
dwBaudRate = 115200;

/* Set a per-byte write delay approximately equal to the time it would
* take to clock out a byte on a standard UART at this baud rate */
_writeDelayUsec = 8000000 / dwBaudRate;
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2 changes: 1 addition & 1 deletion cores/arduino/CDCSerialClass.h
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Expand Up @@ -63,7 +63,7 @@ class CDCSerialClass : public HardwareSerial
};

protected:
void init(const uint32_t dwBaudRate, const uint8_t config);
void init(uint32_t dwBaudRate, const uint8_t config);

uart_init_info *info;
uint32_t _writeDelayUsec;
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