Hendrik/esphome-truma_inetbox
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add slave response frame

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Hendrik Groove 2025-09-19 18:02:37 +02:00
parent 3384c89475
commit 240d5cbd4b
1 changed files with 19 additions and 0 deletions
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19
components/truma_inetbox/LinBusListener_esp32_arduino.cpp
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@ -92,6 +92,8 @@ bool LinBusListener::write_lin_master_frame_(uint8_t pid, const uint8_t *data, u
auto uartComp = static_cast<ESPHOME_UART *>(this->parent_); auto uartComp = static_cast<ESPHOME_UART *>(this->parent_);
auto uart_num = uartComp->get_hw_serial_number(); auto uart_num = uartComp->get_hw_serial_number();
auto hw_serial = uartComp->get_hw_serial(); auto hw_serial = uartComp->get_hw_serial();
// Send master frame (break + sync + pid + data + crc)
uart_send_break((uint8_t) uart_num); uart_send_break((uint8_t) uart_num);
hw_serial->write(0x55); hw_serial->write(0x55);
uint8_t pid_with_parity = (pid & 0x3F) | (addr_parity(pid) << 6); uint8_t pid_with_parity = (pid & 0x3F) | (addr_parity(pid) << 6);
@ -100,6 +102,23 @@ bool LinBusListener::write_lin_master_frame_(uint8_t pid, const uint8_t *data, u
if (len > 0) hw_serial->write((uint8_t*)data, len); if (len > 0) hw_serial->write((uint8_t*)data, len);
hw_serial->write(crc); hw_serial->write(crc);
hw_serial->flush(); hw_serial->flush();
// For diagnostic frames (0x3C), automatically schedule slave response (0x7D)
if (pid == 0x3C) {
// Small delay to allow slave processing time
delayMicroseconds(5000); // 5ms delay
// Send response slot header (break + sync + 0x7D with parity)
uart_send_break((uint8_t) uart_num);
hw_serial->write(0x55);
uint8_t response_pid_with_parity = (0x7D & 0x3F) | (addr_parity(0x7D) << 6);
hw_serial->write(response_pid_with_parity);
hw_serial->flush();
// Note: We don't send data/CRC for response slot - slave will provide that
ESP_LOGD(TAG, "Scheduled 0x7D response slot after 0x3C diagnostic frame");
}
return true; return true;
} }