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refactor a little, add function for clearing buffer

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Drath
2025-09-12 23:36:35 +02:00
parent cc038ec0a2
commit b1ea1f2c99
2 changed files with 8 additions and 3 deletions
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3
include/LCDDisplay.hpp
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@@ -25,7 +25,8 @@ class LCDDisplay {
void setBacklight(bool enabled); void setBacklight(bool enabled);
void setCursor(uint8_t row, uint8_t col); void setCursor(uint8_t row, uint8_t col);
void writeBuf(uint8_t row, uint8_t col, std::string str); void writeBuf(uint8_t row, uint8_t col, std::string str);
void flushBuffer(); void clearBuf();
void flushBuf();
void writeSStream(std::stringstream& ss); void writeSStream(std::stringstream& ss);
void setCustomChar(uint8_t index, std::array<uint8_t, 8> cchar); void setCustomChar(uint8_t index, std::array<uint8_t, 8> cchar);
char bar(uint8_t char_id, double value); char bar(uint8_t char_id, double value);

8
src/LCDDisplay.cpp
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@@ -29,7 +29,7 @@ LCDDisplay::LCDDisplay(std::string dev, uint32_t baud) {
tcflush(lcd, TCIFLUSH); tcflush(lcd, TCIFLUSH);
tcsetattr(lcd, TCSANOW, &term); tcsetattr(lcd, TCSANOW, &term);
_lcd = lcd; _lcd = lcd;
std::memset(linebuf, ' ', sizeof(linebuf)); // init linebuf to spaces clearBuf(); // init linebuf to spaces
} }
LCDDisplay::~LCDDisplay() { LCDDisplay::~LCDDisplay() {
@@ -84,8 +84,12 @@ void LCDDisplay::writeBuf(uint8_t row, uint8_t col, std::string str) {
std::memcpy(&linebuf[row][col], str.c_str(), len); // will overflow std::memcpy(&linebuf[row][col], str.c_str(), len); // will overflow
} }
void LCDDisplay::clearBuf() {
std::memset(linebuf, ' ', sizeof(linebuf));
}
/* hyper optimized buffer flush command, writes whole disp with a single write */ /* hyper optimized buffer flush command, writes whole disp with a single write */
void LCDDisplay::flushBuffer() { void LCDDisplay::flushBuf() {
char writebuf[168]; // 4x40 chars + 2x4 setcursor commands char writebuf[168]; // 4x40 chars + 2x4 setcursor commands
uint8_t setDisp[] = {254, 71, 1}; // skeleton set cursor command uint8_t setDisp[] = {254, 71, 1}; // skeleton set cursor command