comparison include/PRU.h @ 12:a6beeba3a648

Initial support for higher matrix sample rates by reducing the number of channels. Input not tested yet, and not all examples updated to new format.

 
 	// Clean up the GPIO at the end
 	void cleanupGPIO();
 
 	// Initialise and open the PRU
-	int initialise(int pru_num, int frames_per_buffer, bool xenomai_test_pin = false);
+	int initialise(int pru_num, int frames_per_buffer, int spi_channels,
+				   bool xenomai_test_pin = false);
 
 	// Run the code image in the specified file
 	int start(char * const filename);
 
 	// Loop: read and write data from the PRU

 	bool running;		// Whether the PRU is running
 	bool spi_enabled;	// Whether SPI ADC and DAC are used
 	bool gpio_enabled;	// Whether GPIO has been prepared
 	bool led_enabled;	// Whether a user LED is enabled
 	bool gpio_test_pin_enabled; // Whether the test pin was also enabled
+	int spi_num_channels; // How many channels to use for SPI ADC/DAC
 
 	volatile uint32_t *pru_buffer_comm;
 	uint16_t *pru_buffer_spi_dac;
 	uint16_t *pru_buffer_spi_adc;
 	int16_t *pru_buffer_audio_dac;