diff options
Diffstat (limited to 'controller/src/main.c')
| -rw-r--r-- | controller/src/main.c | 104 |
1 files changed, 103 insertions, 1 deletions
diff --git a/controller/src/main.c b/controller/src/main.c index 1bfe8b0..a5f47c4 100644 --- a/controller/src/main.c +++ b/controller/src/main.c @@ -1,6 +1,108 @@ #include "base_midi.h" -#include "uart.h" + +#include "driverlib/uart.h" +#include "driverlib/sysctl.h" +#include "driverlib/gpio.h" +#include "driverlib/pin_map.h" +#include "inc/hw_uart.h" +#include "inc/hw_ints.h" +#include "inc/hw_memmap.h" + + +void UART1IntHandler(void) { + UARTIntClear(UART1_BASE, UART_INT_RX); + while (UARTCharsAvail(UART1_BASE)) { + parse_midi_stream(UARTCharGet(UART1_BASE)); + } +} + +void UARTWrite(uint8_t byte) { + UARTCharPut(UART1_BASE, byte); +} + +static void nothing0(void) {} +static void nothing1(uint8_t) {} +static void nothing2(uint8_t, uint8_t) {} +static void nothing3(uint8_t, uint8_t, uint8_t) {} +static bool quit_parsing(uint8_t) { // TODO: fix library parsers so this works. + return false; +} + + +bool note_on_flag = false; + +void button_handler(void) { + GPIOIntClear(GPIO_PORTF_BASE, GPIO_INT_PIN_4); + if (!note_on_flag) { + note_on(0x02, 0x40, 0x40); + note_on_flag = true; + } else { + note_off(0x02, 0x40); + note_on_flag = false; + } +} + + int main() { + SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC); + + // Initialize UART1. + SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1); + + + while(!SysCtlPeripheralReady(SYSCTL_PERIPH_UART1)); + + // Initialize the GPIO pins for UART1. + GPIOPinConfigure(GPIO_PC4_U1RX); + GPIOPinConfigure(GPIO_PC5_U1TX); + GPIOPinTypeUART(GPIO_PORTC_BASE, GPIO_PIN_4 | GPIO_PIN_5); + + // Configure the UART using the specifications found in the minipix_uart_interface. + // Cource code: word length - 8, 1 stop bit, no parity. + UARTConfigSetExpClk(UART1_BASE, SysCtlClockGet(), 31250, UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE); + UARTEnable(UART1_BASE); + UARTIntEnable(UART1_BASE, UART_INT_RX); + UARTIntRegister(UART1_BASE, UART1IntHandler); + + // Set up MIDI 1.0 library to ignore basically everything. + ConsumerBehavior new_pfns = {.uart_write = UARTWrite, + .note_on_handler = nothing3, + .note_off_handler = nothing3, + .poly_key_handler = nothing3, + .control_change_handler = nothing3, + .program_change_handler = nothing2, + .all_sound_off_handler = nothing1, + .local_control_handler = nothing2, + .all_notes_off_handler = nothing1, + .poly_on_handler = nothing1, + .mtc_quarter_frame_handler = nothing2, + .song_position_pointer_handler = nothing2, + .song_select_handler = nothing1, + .tune_request_handler = nothing0, + .timing_clock_handler = nothing0, + .start_handler = nothing0, + .continue_handler = nothing0, + .stop_handler = nothing0, + .active_sensing_handler = nothing0, + .system_reset_handler = nothing0, // TODO: change. + .sysex_collector = quit_parsing, + .end_of_sysex_handler = nothing0, + /* .bulk_tuning_dump_request_handler = nothing, // TODO: change. */ + /* .bulk_tuning_dump_handler = nothing, */ + /* .single_note_tuning_change_handler = nothing, */ + .unimplemented_universal_sysex_collector = quit_parsing}; + + midi_init(new_pfns); + + // Interrupt whenever GPIO pin PF4 changes, due to SW1 button press. + SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF); + GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_4); + GPIOPadConfigSet(GPIO_PORTF_BASE, GPIO_PIN_4, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU); + GPIOIntTypeSet(GPIO_PORTF_BASE, GPIO_PIN_4, GPIO_RISING_EDGE); + GPIOIntEnable(GPIO_PORTF_BASE, GPIO_INT_PIN_4); + GPIOIntRegister(GPIO_PORTF_BASE, button_handler); + while(true); // Main application loop. + } |