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Fix endian DGUS WriteVariable (#18703)

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This commit is contained in:
yufanyufan
2020-07-19 15:34:36 -07:00
committed by GitHub
parent 12ebb71155
commit 1c94033f7c
4 changed files with 33 additions and 27 deletions
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21
Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp
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@@ -94,9 +94,30 @@ void DGUSDisplay::WriteVariable(uint16_t adr, const void* values, uint8_t values
}
void DGUSDisplay::WriteVariable(uint16_t adr, uint16_t value) {
value = (value & 0xffU) << 8U | (value >> 8U);
WriteVariable(adr, static_cast<const void*>(&value), sizeof(uint16_t));
}
void DGUSDisplay::WriteVariable(uint16_t adr, int16_t value) {
value = (value & 0xffU) << 8U | (value >> 8U);
WriteVariable(adr, static_cast<const void*>(&value), sizeof(uint16_t));
}
void DGUSDisplay::WriteVariable(uint16_t adr, uint8_t value) {
WriteVariable(adr, static_cast<const void*>(&value), sizeof(uint8_t));
}
void DGUSDisplay::WriteVariable(uint16_t adr, long value) {
union { long l; char lb[4]; } endian;
char tmp[4];
endian.l = value;
tmp[0] = endian.lb[3];
tmp[1] = endian.lb[2];
tmp[2] = endian.lb[1];
tmp[3] = endian.lb[0];
WriteVariable(adr, static_cast<const void*>(&tmp), sizeof(long));
}
void DGUSDisplay::WriteVariablePGM(uint16_t adr, const void* values, uint8_t valueslen, bool isstr) {
const char* myvalues = static_cast<const char*>(values);
bool strend = !myvalues;