Chris
128d42c586
- Added function to read out the display_buffer via USB-Serial - Added basic structure and files for later complete firmware (still in progress) - Added Doc folder with schematic in it - Added Python script and batch file to read out the display buffer and open the image in gimp
157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
/*
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* Core1_MIDI_Receiver.c
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*
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* Created: Thu Jan 13 2022 15:35:28
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* Author Chris
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*/
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// ============================================================================================
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// Includes
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#include "Core1_MIDI_Receiver.h"
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#include "UART0.h"
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#include "Command_Definition.h"
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#include "pico/time.h"
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// ============================================================================================
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// Defines
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#define NOTE_UNDEFINED 255
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// ============================================================================================
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// Variables
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enum PARSING_STATE_e
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{
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WAITING_FOR_COMMAND,
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WAITING_FOR_NOTE,
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WAITING_FOR_VALUE
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};
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struct PARSING_s
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{
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enum PARSING_STATE_e State;
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uint8_t MIDI_Event;
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uint8_t MIDI_Channel;
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uint8_t MIDI_Note;
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};
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volatile struct PARSING_s _Parsing;
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History_Buffer_t _MIDI_History_Buffer[RECEIVED_MIDI_HISTORY_BUFFER_SIZE];
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// ============================================================================================
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// Function Declarations
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void Core1_MIDI_Receiver_Histroy_Update (uint8_t data);
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void Core1_MIDI_Receiver_Issue_Event_On_Off_Received(uint8_t midi_channel, uint8_t midi_event);
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void Core1_MIDI_Receiver_Issue_Data_Received (uint8_t midi_data);
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void Core1_MIDI_Receiver_Issue_Full_Note_Received (uint8_t midi_event, uint8_t midi_channel, uint8_t midi_note, uint8_t value);
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/*******************************************************************
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Interrupt Service Routines
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*******************************************************************/
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/*******************************************************************
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Functions
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*******************************************************************/
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void Core1_MIDI_Receiver_Init(void)
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{
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UART0_Init();
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for(uint i=0;i<RECEIVED_MIDI_HISTORY_BUFFER_SIZE;i++)
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{
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_MIDI_History_Buffer[i].Data = HISTORY_ENTRY_UNDEFINED;
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_MIDI_History_Buffer[i].Timestamp_ms = 0;
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}
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_Parsing.State = WAITING_FOR_COMMAND;
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_Parsing.MIDI_Event = MIDI_EVENT_NOTE_ON;
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_Parsing.MIDI_Channel = MIDI_CHANNEL_1;
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_Parsing.MIDI_Note = NOTE_UNDEFINED;
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}
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void Core1_MIDI_Receiver_Process(void)
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{
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while(UART0_Data_Available() > 0)
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{
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uint8_t Data = UART0_Get_Byte();
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Core1_MIDI_Receiver_Histroy_Update(Data);
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switch(_Parsing.State)
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{
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case WAITING_FOR_COMMAND:
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if(MIDI_EVENT_FROM_COMMAND(Data) == MIDI_EVENT_NOTE_ON || MIDI_EVENT_FROM_COMMAND(Data) == MIDI_EVENT_NOTE_OFF)
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{
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_Parsing.MIDI_Event = MIDI_EVENT_FROM_COMMAND(Data);
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_Parsing.MIDI_Channel = MIDI_CHANNEL_FROM_COMMAND(Data);
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_Parsing.State = WAITING_FOR_NOTE;
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Core1_MIDI_Receiver_Issue_Event_On_Off_Received(_Parsing.MIDI_Channel, _Parsing.MIDI_Event);
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break;
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}
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Core1_MIDI_Receiver_Issue_Data_Received(Data);
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break;
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case WAITING_FOR_NOTE:
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if(IS_MIDI_DATA(Data))
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{
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_Parsing.MIDI_Note = Data;
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_Parsing.State = WAITING_FOR_VALUE;
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}
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else
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{
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// Received another command after just receiving a command. This should not happen, but
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// in case it does, reset the parsing state machine
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_Parsing.State = WAITING_FOR_COMMAND;
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}
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break;
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case WAITING_FOR_VALUE:
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if(IS_MIDI_DATA(Data))
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{
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Core1_MIDI_Receiver_Issue_Full_Note_Received(_Parsing.MIDI_Event, _Parsing.MIDI_Channel, _Parsing.MIDI_Note, Data);
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}
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// Reset State Machine and wait for next MIDI Command
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_Parsing.State = WAITING_FOR_COMMAND;
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break;
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default:
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break;
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}
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}
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}
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/*******************************************************************
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Internal Functions
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*******************************************************************/
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void Core1_MIDI_Receiver_Histroy_Update(uint8_t data)
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{
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for(uint i=RECEIVED_MIDI_HISTORY_BUFFER_SIZE-1;i>0;i--)
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{
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_MIDI_History_Buffer[i] = _MIDI_History_Buffer[i-1];
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}
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_MIDI_History_Buffer[0].Data = data;
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_MIDI_History_Buffer[0].Timestamp_ms = to_ms_since_boot(get_absolute_time());
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}
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void Core1_MIDI_Receiver_Issue_Event_On_Off_Received(uint8_t midi_channel, uint8_t midi_event)
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{
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Core1_Light_Controller_MIDI_OnOff_Event_Received(midi_event, midi_channel);
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}
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void Core1_MIDI_Receiver_Issue_Data_Received(uint8_t midi_data)
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{
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Core1_Light_Controller_MIDI_Other_Event_Received(midi_data);
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}
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void Core1_MIDI_Receiver_Issue_Full_Note_Received(uint8_t midi_event, uint8_t midi_channel, uint8_t midi_note, uint8_t value)
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{
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Core1_Light_Controller_MIDI_Full_Note_Received(midi_event, midi_channel, midi_note, value);
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} |