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mhz19: add logging of sent and received PDUs

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it should help with debbuging issues if debugging is enabled.
Also it adds buffer dump function that will be used later
to dump invalid responses.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
This commit is contained in:
Igor Mammedov 2019-05-23 21:18:59 +02:00
parent 57ff465d39
commit 622c7d18c1
1 changed files with 11 additions and 0 deletions
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11
esphome/components/mhz19/mhz19.cpp
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@ -16,6 +16,15 @@ uint8_t mhz19_checksum(const uint8_t *command) {
return 0xFF - sum + 0x01;
}
static char hex_buf[MHZ19_PDU_LENGTH * 3 + 1];
const char *dump_data_buf(const uint8_t *data) {
memset(hex_buf, '\0', sizeof(hex_buf));
for (int i = 0; i < MHZ19_PDU_LENGTH; i++) {
sprintf(hex_buf, "%s%0x%s", hex_buf, data[i], i == MHZ19_PDU_LENGTH - 1 ? "" : " ");
}
return hex_buf;
}
void MHZ19Component::update() {
uint8_t response[MHZ19_PDU_LENGTH];
if (!this->mhz19_write_command_(MHZ19_COMMAND_GET_PPM, response)) {
@ -50,6 +59,7 @@ void MHZ19Component::update() {
}
bool MHZ19Component::mhz19_write_command_(const uint8_t *command, uint8_t *response) {
ESP_LOGD(TAG, "cmd [%s]", dump_data_buf(command));
this->write_array(command, MHZ19_PDU_LENGTH);
this->flush();
@ -57,6 +67,7 @@ bool MHZ19Component::mhz19_write_command_(const uint8_t *command, uint8_t *respo
return true;
bool ret = this->read_array(response, MHZ19_PDU_LENGTH);
ESP_LOGD(TAG, "resp [%s]", dump_data_buf(response));
return ret;
}
float MHZ19Component::get_setup_priority() const { return setup_priority::DATA; }