Commit 7205332a authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

add DMX driver for MSP430FR5969 and MSP430FR5994 launchpads

parent 8b5d14c7

README.md

+5 −3
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@@ -46,6 +46,7 @@ Peripheral communication: 
* I²C (master only, interrupt-driven)

* SPI (master only, polling)

* UART (output polling, input interrupt-driven)

* DMX (polling, via UART, overrides regular serial output)

* NeoPixel/WS2812B (Adafruit driver)



Hardware features:
@@ -56,9 +57,10 @@ Hardware features: 


Peripheral communication:



* I²C on eUSCI\_B0 (master only, interrupt-driven)

* SPI on eUSCI\_B0 (master only, polling)

* UART on eUSCI\_A1 (output polling, input interrupt-driven)

* I²C on eUSCI\_B0 (FR5969) / eUSCI\_B1 (FR5994) (master only, interrupt-driven)

* SPI on eUSCI\_B0 (FR5969) / eUSCI\_B1 (FR5994) (master only, polling)

* UART on eUSCI\_A0 (FR5969) / eUSCI\_A1 (FR5994) (output polling, input interrupt-driven)

* DMX on eUSCI\_A1 (FR5969) / eUSCI\_A3 (FR5994) (polling)



Hardware features:

include/arch/msp430fr5969lp/driver/dmx.h

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/*

 * Copyright 2022 Daniel Friesel

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */



class DMX {

	private:

		DMX(const DMX &copy);



	public:

		unsigned char frames[16];



		DMX() {}



		void setup();

		void write();

};



extern DMX dmx;

include/arch/msp430fr5994lp/driver/dmx.h

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/*

 * Copyright 2022 Daniel Friesel

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */



class DMX {

	private:

		DMX(const DMX &copy);



	public:

		unsigned char frames[16];



		DMX() {}



		void setup();

		void write();

};



extern DMX dmx;

src/arch/arduino-nano/driver/dmx.cc

+3 −3
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@@ -23,7 +23,7 @@ void DMX::setup() 
#endif



	UCSR0B |= _BV(TXEN0);

	UCSR0C = _BV(USBS0) | _BV(UCSZ01) | _BV(UCSZ00); // 8 bits

	UCSR0C = _BV(USBS0) | _BV(UCSZ01) | _BV(UCSZ00); // MSB first, 8 data bits, 2 stop bits, no parity

}



void DMX::write()
@@ -31,9 +31,9 @@ void DMX::write() 
	// Disable UART for reset and mark signals

	UCSR0B &= ~_BV(TXEN0);

	gpio.output(GPIO::pd1, 0);

	arch.delay_us(88); // break

	arch.delay_us(88); // break / reset

	gpio.output(GPIO::pd1, 1);

	arch.delay_us(8);

	arch.delay_us(8); // mark

	UCSR0B |= _BV(TXEN0); // causes line to go high

	for (uint8_t i = 0; i < 16; i++) {

		while (!(UCSR0A & _BV(UDRE0)));

src/arch/msp430fr5969lp/Kconfig

+4 −0
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@@ -9,6 +9,10 @@ config arch_msp430fr5969lp_driver_counter 
bool "Cycle Counter"

select meta_driver_counter



config arch_msp430fr5969lp_driver_dmx

bool "DMX"

select meta_driver_dmx



config arch_msp430fr5969lp_driver_i2c

bool "I2C on eUSCI_B0"

select meta_driver_hardware_i2c