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[nextion] Batch UART reads to reduce loop overhead (#13823)

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
J. Nick Koston
2026-02-09 12:20:50 -06:00
committed by GitHub
parent 8fffe7453d
commit 4a9ff48f02
1 changed files with 10 additions and 4 deletions
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14
esphome/components/nextion/nextion.cpp
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@@ -397,11 +397,17 @@ bool Nextion::remove_from_q_(bool report_empty) {
}
void Nextion::process_serial_() {
uint8_t d;
// Read all available bytes in batches to reduce UART call overhead.
int avail = this->available();
uint8_t buf[64];
while (avail > 0) {
size_t to_read = std::min(static_cast<size_t>(avail), sizeof(buf));
if (!this->read_array(buf, to_read)) {
break;
}
avail -= to_read;
while (this->available()) {
read_byte(&d);
this->command_data_ += d;
this->command_data_.append(reinterpret_cast<const char *>(buf), to_read);
}
}
// nextion.tech/instruction-set/