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slightly cleaner?

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Drath
2025-09-13 14:18:15 +02:00
parent b1ea1f2c99
commit 16588cb9a9
1 changed files with 9 additions and 10 deletions
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19
src/LCDDisplay.cpp
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@@ -90,17 +90,16 @@ void LCDDisplay::clearBuf() {
/* hyper optimized buffer flush command, writes whole disp with a single write */
void LCDDisplay::flushBuf() {
char writebuf[168]; // 4x40 chars + 2x4 setcursor commands
uint8_t setDisp[] = {254, 71, 1}; // skeleton set cursor command
uint8_t writebuf[168]; // 4x40 chars + 2x4 setcursor commands
uint8_t setDisp[] = {254, 71, 1, 1}; // setr cursor to char 1, line 1
std::memcpy(&writebuf[0], setDisp, 3); // copy template set cursor command
writebuf[3] = 1; // actual set cursor param, set to 1st row
std::memcpy(&writebuf[4], linebuf[0], 40); // copy 1st line
std::memcpy(&writebuf[44], linebuf[1], 40); // copy 2nd line
std::memcpy(&writebuf[84], setDisp, 3); // copy template set cursor command
writebuf[87] = 3; // set cursor to 3rd line
std::memcpy(&writebuf[88], linebuf[2], 40); // copy 3rd line
std::memcpy(&writebuf[128], linebuf[3], 40); // copy 4th line
std::memcpy(&writebuf[0], setDisp, 4); // copy set cursor command
std::memcpy(&writebuf[4], linebuf[0], 40); // copy 1st line
std::memcpy(&writebuf[44], linebuf[1], 40); // copy 2nd line
std::memcpy(&writebuf[84], setDisp, 3); // copy set cursor command but skip the line byte
writebuf[87] = 3; // set cursor to 3rd line
std::memcpy(&writebuf[88], linebuf[2], 40); // copy 3rd line
std::memcpy(&writebuf[128], linebuf[3], 40); // copy 4th line
write(_lcd, writebuf, 168);
}