diff options
| -rw-r--r-- | include/arch/arduino-nano/driver/dmx.h | 20 | ||||
| -rw-r--r-- | src/arch/arduino-nano/Kconfig | 9 | ||||
| -rw-r--r-- | src/arch/arduino-nano/Makefile.inc | 4 | ||||
| -rw-r--r-- | src/arch/arduino-nano/driver/dmx.cc | 52 | ||||
| -rw-r--r-- | src/driver/Kconfig | 2 |
5 files changed, 87 insertions, 0 deletions
diff --git a/include/arch/arduino-nano/driver/dmx.h b/include/arch/arduino-nano/driver/dmx.h new file mode 100644 index 0000000..5822a0d --- /dev/null +++ b/include/arch/arduino-nano/driver/dmx.h @@ -0,0 +1,20 @@ +/* + * Copyright 2022 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +class DMX { + private: + DMX(const DMX ©); + + public: + unsigned char frames[16]; + + DMX() {} + + void setup(); + void write(); +}; + +extern DMX dmx; diff --git a/src/arch/arduino-nano/Kconfig b/src/arch/arduino-nano/Kconfig index cd4a917..99f72aa 100644 --- a/src/arch/arduino-nano/Kconfig +++ b/src/arch/arduino-nano/Kconfig @@ -35,6 +35,15 @@ config arch_arduino_nano_driver_timer bool "Timer with Interrupts" select meta_driver_timer +config arch_arduino_nano_driver_dmx +bool "DMX" +select meta_driver_dmx + +config arch_arduino_nano_driver_dmx_pin +string "DMX Pin" +default "pb5" +depends on arch_arduino_nano_driver_dmx + choice arch_arduino_nano_cpu bool "CPU Type" diff --git a/src/arch/arduino-nano/Makefile.inc b/src/arch/arduino-nano/Makefile.inc index c8221e4..1455105 100644 --- a/src/arch/arduino-nano/Makefile.inc +++ b/src/arch/arduino-nano/Makefile.inc @@ -88,6 +88,10 @@ ifdef CONFIG_arch_arduino_nano_driver_adc CXX_TARGETS += src/arch/arduino-nano/driver/adc.cc endif +ifdef CONFIG_arch_arduino_nano_driver_dmx + CXX_TARGETS += src/arch/arduino-nano/driver/dmx.cc +endif + ifdef CONFIG_arch_arduino_nano_driver_spi CXX_TARGETS += src/arch/arduino-nano/driver/spi.cc endif diff --git a/src/arch/arduino-nano/driver/dmx.cc b/src/arch/arduino-nano/driver/dmx.cc new file mode 100644 index 0000000..20a7332 --- /dev/null +++ b/src/arch/arduino-nano/driver/dmx.cc @@ -0,0 +1,52 @@ +/* + * Copyright 2022 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#include <avr/io.h> +#include "arch.h" +#include "driver/dmx.h" +#include "driver/gpio.h" + +#define BAUD 250000UL +#include <util/setbaud.h> + +void DMX::setup() +{ + UBRR0H = UBRRH_VALUE; + UBRR0L = UBRRL_VALUE; + +#if USE_2X + UCSR0A |= _BV(U2X0); +#else + UCSR0A &= ~_BV(U2X0); +#endif + + UCSR0B |= _BV(TXEN0); + UCSR0C = _BV(USBS0) | _BV(UCSZ01) | _BV(UCSZ00); // 8 bits +} + +void DMX::write() +{ + // Disable UART for reset and mark signals + UCSR0B &= ~_BV(TXEN0); + gpio.output(GPIO::pd1, 0); + arch.delay_us(88); // break + gpio.output(GPIO::pd1, 1); + arch.delay_us(8); + UCSR0B |= _BV(TXEN0); // causes line to go high + for (uint8_t i = 0; i < 16; i++) { + while (!(UCSR0A & _BV(UDRE0))); + UDR0 = frames[i]; + } + for (uint8_t i = 0; i < 241; i++) { + while (!(UCSR0A & _BV(UDRE0))); + UDR0 = 0; + } + for (uint8_t i = 0; i < 255; i++) { + while (!(UCSR0A & _BV(UDRE0))); + UDR0 = 0; + } +} + +DMX dmx; diff --git a/src/driver/Kconfig b/src/driver/Kconfig index 2b8a8d5..5f544ac 100644 --- a/src/driver/Kconfig +++ b/src/driver/Kconfig @@ -6,6 +6,8 @@ config meta_driver_adc bool config meta_driver_counter bool +config meta_driver_dmx +bool config meta_driver_hardware_i2c bool config meta_driver_i2c |