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[TTY/Serial] Always use absolute positioning instead of relying on CR-LF

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This commit is contained in:
Sam Demeulemeester
2022-06-19 16:47:10 +02:00
parent 1c88824a7d
commit 6b998e82e7
1 changed files with 3 additions and 8 deletions
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11
system/serial.c
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@@ -151,14 +151,9 @@ void tty_send_region(int start_row, int start_col, int end_row, int end_col)
for (int row = start_row; row <= end_row; row++) {
/* Move the cursor to the new position. If the starting col is not 0 or
* this is the first row we have to use absolute positioning, otherwise
* CR + LF can take us to col=0, row++ */
if (start_col || row == start_row) {
tty_goto(row, start_col);
} else {
serial_echo_print("\r\n");
}
// Always use absolute positioning instead of relying on CR-LF to avoid issues
// when a CR-LF is lost (especially with Industrial RS232/Ethernet converters).
tty_goto(row, start_col);
// Copy Shadow buffer to TTY buffer
pos = 0;