kuba/TEF6686_ESP32
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optimize one i2c write

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KubaPro010
2026-02-17 10:44:32 +01:00
parent af0e177c7d
commit 57aa865b2b
1 changed files with 4 additions and 8 deletions
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12
src/comms.cpp
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@@ -923,6 +923,7 @@ void tryWiFi() {
} }
void total_pc_control() { void total_pc_control() {
static uint8_t data[255];
if(i2c_pc_control_init) { if(i2c_pc_control_init) {
Serial.write(1); Serial.write(1);
Serial.write(0xff); Serial.write(0xff);
@@ -938,13 +939,9 @@ void total_pc_control() {
return; return;
} }
uint8_t *data = (uint8_t*)malloc(userlen);
if(data == NULL) return;
auto len = Serial.read(data, userlen); auto len = Serial.read(data, userlen);
if(len != userlen) { if(len != userlen) return;
free(data);
return; // Incomplete data
}
switch (data[0]) { switch (data[0]) {
case 0: { // Set clock case 0: { // Set clock
if(len < 5) break; if(len < 5) break;
@@ -973,7 +970,7 @@ void total_pc_control() {
if(len < 3 + datalen + 1) break; // Validate buffer size if(len < 3 + datalen + 1) break; // Validate buffer size
Wire.beginTransmission(addr); Wire.beginTransmission(addr);
for(int i = 0; i < datalen; i++) Wire.write(data[3+i]); Wire.write(data + 3, len - 3);
auto out = Wire.endTransmission(false); auto out = Wire.endTransmission(false);
uint8_t recvlen_requested = data[3+datalen]; uint8_t recvlen_requested = data[3+datalen];
@@ -1018,7 +1015,6 @@ void total_pc_control() {
default: default:
break; break;
} }
free(data);
Serial.flush(true); Serial.flush(true);
} }
} }