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Adding 9-bit support to the hardware serial UART #379

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Adding 9-bit support to the hardware serial UART #379

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90e4f56
Update Serial.h for 9-bit support
vashadow Oct 5, 2024
39c72ad
Update Serial.cpp to support 9-bit functionality on UART
vashadow Oct 5, 2024
627bb4c
Update Serial.cpp
vashadow Oct 13, 2024
e8d56d6
Update Serial.h
vashadow Oct 13, 2024
7235c06
Merge pull request #1 from arduino/main
vashadow Oct 18, 2024
36083a3
Add files via upload
vashadow Oct 18, 2024
a1cfd24
Update package.json
vashadow Oct 18, 2024
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Update Serial.cpp 
I removed two unnecessary functions that I added with this pull request to turn on 9bit. There was a little code cleanup /refactoring.
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@vashadow
vashadow authored Oct 13, 2024
commit 627bb4c44bf7f2ef1c091f5ef758d618f7ce21ec
24 changes: 0 additions & 24 deletions cores/arduino/Serial.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -341,27 +341,3 @@ size_t UART::write_raw(uint8_t* c, size_t len) {
}
return len;
}

/* -------------------------------------------------------------------------- */
size_t UART::write_9bit(uint8_t c, bool wake) {
/* -------------------------------------------------------------------------- */
uint16_t bit = 0x00;
if (wake) {bit = 0x100;}
uart_ctrl.p_reg->TDRHL = 0xFC00 + bit + c;
while (uart_ctrl.p_reg->SSR_b.TEND == 0) {}
return 1;
}

/* -------------------------------------------------------------------------- */
size_t UART::write_9bit(uint8_t* c, bool wake, size_t len) {
/* -------------------------------------------------------------------------- */
size_t i = 0;
uint16_t bit = 0x00;
if (wake) {bit = 0x100;}
while (i < len) {
uart_ctrl.p_reg->TDRHL = *(c+i) + 0xFC00 + bit;
while (uart_ctrl.p_reg->SSR_b.TEND == 0) {}
i++;
}
return len;
}