diff options
| -rw-r--r-- | src/app/mqtt-to-dmx/Kconfig | 11 | ||||
| -rw-r--r-- | src/app/mqtt-to-dmx/Makefile.inc | 0 | ||||
| -rw-r--r-- | src/app/mqtt-to-dmx/main.cc | 122 |
3 files changed, 133 insertions, 0 deletions
diff --git a/src/app/mqtt-to-dmx/Kconfig b/src/app/mqtt-to-dmx/Kconfig new file mode 100644 index 0000000..80a42a2 --- /dev/null +++ b/src/app/mqtt-to-dmx/Kconfig @@ -0,0 +1,11 @@ +# Copyright 2024 Birte Kristina Friesel +# +# SPDX-License-Identifier: CC0-1.0 + +prompt "MQTT to DMX gateway via ESP8266-01" +depends on !loop && !wakeup && meta_driver_dmx && (meta_driver_stdin1 || meta_driver_stdin2 || meta_driver_stdin3) && meta_driver_timer +help + MQTT to DMX gateway based upon an ESP8266 MQTT to UART bridge and a MAX485. + Connect ESP8266 TX to UART1/2/3 RX and enable the corresponding stdin and stdout drivers, configured to 115200 Baud. + Connect UART1/2/3 TX to MAX485 DI and enable the corresponding DMX driver. + Do not use the same UART for stdin and DMX. diff --git a/src/app/mqtt-to-dmx/Makefile.inc b/src/app/mqtt-to-dmx/Makefile.inc new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/src/app/mqtt-to-dmx/Makefile.inc diff --git a/src/app/mqtt-to-dmx/main.cc b/src/app/mqtt-to-dmx/main.cc new file mode 100644 index 0000000..6eb6e0d --- /dev/null +++ b/src/app/mqtt-to-dmx/main.cc @@ -0,0 +1,122 @@ +/* + * Copyright 2024 Birte Kristina Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#include "arch.h" +#include "driver/gpio.h" +#include "driver/stdout.h" +#include "driver/uptime.h" + +#if defined(CONFIG_meta_driver_stdin1) +#include "driver/stdout1.h" +#include "driver/stdin1.h" +#define koutx kout1 +#define kin kin1 +#elif defined(CONFIG_meta_driver_stdin2) +#include "driver/stdout2.h" +#include "driver/stdin2.h" +#define koutx kout2 +#define kin kin2 +#elif defined(CONFIG_meta_driver_stdin3) +#include "driver/stdout3.h" +#include "driver/stdin3.h" +#define koutx kout3 +#define kin kin3 +#else +#error "No stdin driver found" +#endif + +#if defined(CONFIG_meta_driver_dmx1) +#include "driver/dmx1.h" +#define dmx dmx1 +#elif defined(CONFIG_meta_driver_dmx2) +#include "driver/dmx2.h" +#define dmx dmx2 +#elif defined(CONFIG_meta_driver_dmx3) +#include "driver/dmx3.h" +#define dmx dmx3 +#else +#error "No DMX driver found" +#endif + +#include "driver/timer.h" +volatile unsigned char timer_done = 0; +char buffer[24]; +unsigned char buf_pos = 0; + +void input_to_dmx(void) +{ + unsigned char num = 0; + /* + * The first DMX frame is always 0. However, incoming UART messages from + * the ESP8266 start with " " after the "RX:" part has been removed. So, + * the first actual message will end up in dmx.frames[1] as intended. + */ + unsigned char dmx_frame = 0; + for (unsigned int i = 0; i < buf_pos; i++) { + if ((buffer[i] >= '0') && (buffer[i] <= '9')) { + num *= 10; + num += buffer[i] - '0'; + } + else { + dmx.frames[dmx_frame++] = num; + num = 0; + } + } +} + +int main(void) +{ + arch.setup(); + gpio.setup(); + kout.setup(); + koutx.setup(); + kin.setup(); + + for (unsigned char i = 0; i < dmx.num_frames; i++) { + dmx.frames[i] = 0; + } + + dmx.setup(); + timer.setup_hz(15); + timer.start(1); + + while (1) { + while (!timer_done) { + arch.idle(); + while (kin.hasKey() && (buf_pos < sizeof(buffer))) { + char key = kin.getKey(); + kout << key << flush; + + /* + * Whoever decided that it was a good idea to prefix MQTT messages with "RX: " when outputting them on UART? + * Oh right, that was yesterday-me. + */ + if ((key == 'R') || (key == 'X') || (key == ':')) { + continue; + } + + buffer[buf_pos++] = key; + + if ((key == '\n') || (key == '\r')) { + input_to_dmx(); + kout << endl << "DMX: " << dmx.frames[1] << " " << dmx.frames[2] << " " << dmx.frames[3] << " " << dmx.frames[4] << endl << "> "; + buf_pos = 0; + } + } + } + timer.stop(); + timer_done = 0; + timer.start(1); + + gpio.led_toggle(0); + dmx.write(); + } + + return 0; +} + +ON_TIMER_INTERRUPT_head + timer_done = 1; +ON_TIMER_INTERRUPT_tail |