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Merge branch 'haext-ESP32IDFPortIndexing'

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This commit is contained in:
Andreas Böhler
2025-07-06 15:57:47 +02:00
parent 4d1c155e62 d8828fbe66
commit 8e108f0b20
3 changed files with 5 additions and 3 deletions
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2
README.md
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@@ -42,7 +42,7 @@ dmx512:
* `uart_id`: Set this to the ID of your UART component
* `enable_pin`: Set this to the pin number the MAX585 enable pins are connected to. Optional
* `tx_pin`: Set this to the same pin number as the UART component. This is required for the generation of the break signal. Defaults to GPIO5. If ESPHome >= 2023.12.0 is used, the option `allow_other_uses` has to be set to `true` (here and in the UART component).
* `uart_num`: Set this to the internal ESP32 UART number. If only logging is configured, this should be set to 1 (default).
* `uart_num`: Set this to the internal ESP32 UART number. If only logging is configured, this should be set to 1 (default). (Note some ESP32 boards don't have 3 UARTs, check the datasheet of your board if using a different one.)
* `periodic_update`: If set to false, only state changes are transmitted and the bus is silent in between - violates the specification and may cause some dimmers to turn off
* `force_full_frames`: If set to true, the full 513-byte frame is always sent. Otherwise, only the configured channels are transmitted.
* `custom_mab_len`: Set a custom mark-after-break length (in uS, default 12)

2
components/dmx512/dmx512esp32.h
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@@ -19,8 +19,10 @@ class DMX512ESP32 : public DMX512 {
this->uart_idx_ = U0TXD_OUT_IDX;
} else if(num == 1) {
this->uart_idx_ = U1TXD_OUT_IDX;
#ifdef U2TXD_OUT_IDX
} else if(num == 2) {
this->uart_idx_ = U2TXD_OUT_IDX;
#endif
}
}
};

4
components/dmx512/dmx512esp32idf.cpp
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@@ -10,9 +10,9 @@ namespace dmx512 {
static const char *TAG = "dmx512";
void DMX512ESP32IDF::send_break() {
uart_set_line_inverse(this->uart_idx_, UART_SIGNAL_TXD_INV);
uart_set_line_inverse((uart_port_t)this->uart_idx_, UART_SIGNAL_TXD_INV);
delayMicroseconds(this->break_len_);
uart_set_line_inverse(this->uart_idx_, UART_SIGNAL_INV_DISABLE);
uart_set_line_inverse((uart_port_t)this->uart_idx_, UART_SIGNAL_INV_DISABLE);
delayMicroseconds(this->mab_len_);
}