3diy
/
klipper
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

lpc176x: Reset LPC_UART0->FDR when using serial 

The popular "LPC17xx-DFU-Bootloader" alters the LPC_UART0->FDR
register, so be sure to reset it back to its default when using serial
in Klipper.

Reported by @b-vs.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-07-10 20:00:58 -04:00
parent 0343d0c73a
commit b77375e955
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/lpc176x/serial.c
View File

@ -24,6 +24,7 @@ serial_init(void)
uint32_t div = pclk / (CONFIG_SERIAL_BAUD * 16); uint32_t div = pclk / (CONFIG_SERIAL_BAUD * 16);
LPC_UART0->DLL = div & 0xff; LPC_UART0->DLL = div & 0xff;
LPC_UART0->DLM = (div >> 8) & 0xff; LPC_UART0->DLM = (div >> 8) & 0xff;
LPC_UART0->FDR = 0x10;
LPC_UART0->LCR = 3; // 8N1 ; clear DLAB bit LPC_UART0->LCR = 3; // 8N1 ; clear DLAB bit
// Enable fifo // Enable fifo