diff options
Diffstat (limited to 'fw/midi-dials/Src/usbd_midi_if.c')
| -rw-r--r-- | fw/midi-dials/Src/usbd_midi_if.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/fw/midi-dials/Src/usbd_midi_if.c b/fw/midi-dials/Src/usbd_midi_if.c deleted file mode 100644 index bbcbf97..0000000 --- a/fw/midi-dials/Src/usbd_midi_if.c +++ /dev/null @@ -1,480 +0,0 @@ -/**
- ******************************************************************************
- * @file : usbd_midi_if.c
- * @brief :
- ******************************************************************************
-
- (CC at)2016 by D.F.Mac. @TripArts Music
-
- ******************************************************************************
-
- Modified by keshikan (www.keshikan.net) 2018
- The license is (CC BY 4.0), and takes over from original usbd_midi_if.h/c.
-
- See also original source code page.
- https://github.com/mimuz/mimuz-tuch/blob/master/STM32/
-
- ******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "usbd_midi_if.h"
-#include "stm32f0xx_hal.h"
-
-
-// basic midi rx/tx functions
-static uint16_t MIDI_DataRx(uint8_t *msg, uint16_t length);
-static uint16_t MIDI_DataTx(uint8_t *msg, uint16_t length);
-
-// for Cure Series
-#define MIDI_BUFFER_SIZ (512)//FIFO buffer byte size for midi message buffer
-
-RingBufferU8 rbuf_usb_rx[MIDI_OUT_JACK_NUM]; //for input from USB
-RingBufferU8 rbuf_jack_rx[MIDI_IN_JACK_NUM]; //for input from MIDI-IN jack
-
-//for receiving midi data from jack
-MidiAnalysisStatus analyzed_status[MIDI_IN_JACK_NUM];
-MIDIEvent midi_event[MIDI_IN_JACK_NUM]; //received midi data
-
-uint8_t rx_midi_msg[MIDI_IN_JACK_NUM];
-
-
-FUNC_STATUS midiInit()
-{
- uint32_t i,j;
-
- for(i=0; i<MIDI_OUT_JACK_NUM; i++){
- if(BUFFER_SUCCESS != cureRingBufferU8Init(&rbuf_usb_rx[i], MIDI_BUFFER_SIZ))
- {
- return FUNC_ERROR;
- }
- }
-
- for(i=0; i<MIDI_IN_JACK_NUM; i++){
- if(BUFFER_SUCCESS != cureRingBufferU8Init(&rbuf_jack_rx[i], MIDI_BUFFER_SIZ))
- {
- return FUNC_ERROR;
- }
- }
-
- //Init RX
- for(i=0; i<MIDI_IN_JACK_NUM; i++){
-
- rx_midi_msg[i] = 0x00;
- analyzed_status[i].data_idx = 0;
- midi_event[i].length = 0;
-
- for(j=0; j<MIDI_SENDDATA_MAX; j++){
- midi_event[i].midi_byte[j] = 0x00;
- }
- }
-
- return FUNC_SUCCESS;
-}
-
-FUNC_STATUS midiGetFromUsbRx(uint8_t cable_num, uint8_t* dat)
-{
- if(BUFFER_SUCCESS != cureRingBufferU8Dequeue(&rbuf_usb_rx[cable_num], dat))
- {
- return FUNC_ERROR;
- }
-
- return FUNC_SUCCESS;
-}
-
-FUNC_STATUS midiGetFromJackRx(uint8_t cable_num)
-{
- if(BUFFER_SUCCESS != cureRingBufferU8Dequeue(&rbuf_jack_rx[cable_num], &rx_midi_msg[cable_num]))
- {
- return FUNC_ERROR;
- }
-
- return FUNC_SUCCESS;
-}
-
-FUNC_STATUS midiSetFromJackRx(uint8_t cable_num, uint8_t* dat)
-{
- if(BUFFER_SUCCESS != cureRingBufferU8Enqueue(&rbuf_jack_rx[cable_num], dat))
- {
- return FUNC_ERROR;
- }
-
- return FUNC_SUCCESS;
-}
-
-
-bool isUsbRxBufEmpty(uint8_t cable_num)
-{
- if( 0 != _cureRingBufferU8GetUsedSize(&rbuf_usb_rx[cable_num]) ){
- return false;
- }
-
- return true;
-}
-
-bool isJackRxBufEmpty(uint8_t cable_num)
-{
- if( 0 != _cureRingBufferU8GetUsedSize(&rbuf_jack_rx[cable_num]) ){
- return false;
- }
-
- return true;
-}
-
-bool isRxBufEmpty()
-{
- uint32_t i;
-
- for(i=0; i<MIDI_OUT_JACK_NUM; i++){
- if(0 != _cureRingBufferU8GetUsedSize(&rbuf_usb_rx[i]))
- {
- return false;
- }
- }
-
- for(i=0; i<MIDI_IN_JACK_NUM; i++){
- if(0 != _cureRingBufferU8GetUsedSize(&rbuf_jack_rx[i]))
- {
- return false;
- }
- }
- return true;
-}
-
-
-USBD_MIDI_ItfTypeDef USBD_Interface_fops_FS =
-{
- MIDI_DataRx,
- MIDI_DataTx
-};
-
-
-static uint16_t MIDI_DataRx(uint8_t *msg, uint16_t length){
- uint16_t cnt;
- uint16_t msgs = length / 4;
- uint16_t chk = length % 4;
- uint8_t u8b;
- uint8_t midi_size;
-
- if(0 != chk)
- {
- return 0;
- }
-
- for(uint32_t cnt_msgs = 0; cnt_msgs < msgs; cnt_msgs++){
-
- uint8_t cable_num = (msg[0 + 4*cnt_msgs] & 0xF0) >> 4;
- uint8_t code_idx_num = msg[0 + 4*cnt_msgs] & 0x0F;
-
- switch (code_idx_num) {
-
- //not defined
- case 0x0:
- case 0x1:
- midi_size = 0;
- break;
-
- //1byte message
- case 0x5:
- case 0xF:
- midi_size = 1;
- break;
-
- //2byte message
- case 0x2:
- case 0x6:
- case 0xC:
- case 0xD:
- midi_size = 2;
- break;
-
- //3byte message
- case 0x3:
- case 0x4:
- case 0x7:
- case 0x8:
- case 0x9:
- case 0xA:
- case 0xB:
- case 0xE:
- midi_size = 3;
- break;
-
- default:
- midi_size = 0;
- break;
- }
-
- for(cnt = 0;cnt < midi_size;cnt ++){
- u8b = *(msg + 4*cnt_msgs + cnt + 1);
- cureRingBufferU8Enqueue(&rbuf_usb_rx[cable_num], &u8b);
- }
- }
-
- return 0;
-}
-
-void sendMidiMessage(uint8_t *msg, uint16_t size){
- if(size == 4){
-// APP_Rx_Buffer[0] = msg[0];
-// APP_Rx_Buffer[1] = msg[1];
-// APP_Rx_Buffer[2] = msg[2];
-// APP_Rx_Buffer[3] = msg[3];
-// USBD_MIDI_SendData(&hUsbDeviceFS, APP_Rx_Buffer, size);
- MIDI_DataTx(msg, size);
- }
-}
-
-static uint16_t MIDI_DataTx(uint8_t *msg, uint16_t length){
- uint32_t i = 0;
- while (i < length) {
- APP_Rx_Buffer[APP_Rx_ptr_in] = *(msg + i);
- APP_Rx_ptr_in++;
- i++;
- if (APP_Rx_ptr_in == APP_RX_DATA_SIZE) {
- APP_Rx_ptr_in = 0;
- }
- }
- return USBD_OK;
-}
-
-bool midiEventIsGenerated(uint8_t cable_num)
-{
- uint8_t upper_half_byte= (rx_midi_msg[cable_num]) & 0xF0;
-
- if( upper_half_byte & 0x80 ){//0x80-0xFF:status byte
-
- switch(upper_half_byte){
-
- case 0xF0://0xF0-0xFF:system message
- switch(rx_midi_msg[cable_num]){
-
- case 0xF0://SysEx Start
- analyzed_status[cable_num].data_idx = 0;
- midi_event[cable_num].midi_byte[ analyzed_status[cable_num].data_idx++ ] = rx_midi_msg[cable_num];
- analyzed_status[cable_num].type = MSG_SYSEX;
- analyzed_status[cable_num].stat = WAIT_SYSTEM_DATA;
- break;
-
- case 0xF7://SysEx End
- midi_event[cable_num].midi_byte[ analyzed_status[cable_num].data_idx++ ] = rx_midi_msg[cable_num];
- midi_event[cable_num].length = analyzed_status[cable_num].data_idx;
- analyzed_status[cable_num].stat = END_ANALYSIS;
- break;
-
- case 0xF2://Song Position
- midi_event[cable_num].midi_byte[0] = rx_midi_msg[cable_num];
- analyzed_status[cable_num].type = MSG_THREE_BYTE;
- analyzed_status[cable_num].stat = WAIT_DATA1;
- break;
-
- case 0xF1://Time Code
- case 0xF3://Song Select
- midi_event[cable_num].midi_byte[0] = rx_midi_msg[cable_num];
- analyzed_status[cable_num].type = MSG_TWO_BYTE;
- analyzed_status[cable_num].stat = WAIT_DATA1;
- break;
-
- case 0xF4://Undefined
- case 0xF5://Undefined
- case 0xF6://Tune request
- case 0xF8://Timing clock
- case 0xF9://Undefined
- case 0xFA://Start
- case 0xFB://Continue
- case 0xFC://Stop
- case 0xFD://Undefined
- case 0xFE://Active Sensing
- case 0xFF://Reset
- midi_event[cable_num].midi_byte[0] = rx_midi_msg[cable_num];
- midi_event[cable_num].length = 1;
- analyzed_status[cable_num].type = MSG_ONE_BYTE;
- analyzed_status[cable_num].stat = END_ANALYSIS;
- break;
- }
- analyzed_status[cable_num].is_system_common = true;
- break;
-
- case 0x80://Note Off
- case 0x90://Note On
- case 0xA0://Polyphonic key-pressure
- case 0xB0://ControlChange
- case 0xE0://PitchBend
- midi_event[cable_num].midi_byte[0] = rx_midi_msg[cable_num];
- analyzed_status[cable_num].type = MSG_THREE_BYTE;
- analyzed_status[cable_num].stat = WAIT_DATA1;
- analyzed_status[cable_num].is_system_common = false;
- break;
-
- case 0xC0://Program Change
- case 0xD0://Channel pressure
- midi_event[cable_num].midi_byte[0] = rx_midi_msg[cable_num];
- analyzed_status[cable_num].type = MSG_TWO_BYTE;
- analyzed_status[cable_num].stat = WAIT_DATA1;
- analyzed_status[cable_num].is_system_common = false;
- break;
-
- default:
- analyzed_status[cable_num].type = MSG_NOTHING;
- analyzed_status[cable_num].stat = START_ANALYSIS;
- analyzed_status[cable_num].is_system_common = false;
- break;
- }
-
- }else{//0x00-0x7F:data byte
-
- switch(analyzed_status[cable_num].stat){
-
- case WAIT_DATA1:
- midi_event[cable_num].midi_byte[1] = rx_midi_msg[cable_num];
-
- if(MSG_THREE_BYTE == analyzed_status[cable_num].type ){
- analyzed_status[cable_num].stat = WAIT_DATA2;
- }else if( MSG_TWO_BYTE == analyzed_status[cable_num].type ){
- midi_event[cable_num].length = 2;
- analyzed_status[cable_num].stat = END_ANALYSIS;
- }else{
- analyzed_status[cable_num].stat = START_ANALYSIS;
- }
- break;
-
- case WAIT_DATA2:
- if(MSG_THREE_BYTE == analyzed_status[cable_num].type ){
- midi_event[cable_num].midi_byte[2] = rx_midi_msg[cable_num];
- midi_event[cable_num].length = 3;
- analyzed_status[cable_num].stat = END_ANALYSIS;
- }else{
- analyzed_status[cable_num].stat = START_ANALYSIS;
- }
- break;
-
- case WAIT_SYSTEM_DATA:
- midi_event[cable_num].midi_byte[ analyzed_status[cable_num].data_idx++ ] = rx_midi_msg[cable_num];
-
- if(analyzed_status[cable_num].data_idx > (MIDI_SENDDATA_MAX - 1) ){
- analyzed_status[cable_num].stat = END_ANALYSIS;
- }
- break;
-
- case END_ANALYSIS://running status:When status byte is omitted.
- midi_event[cable_num].midi_byte[1] = rx_midi_msg[cable_num];
- if(MSG_THREE_BYTE == analyzed_status[cable_num].type){
- analyzed_status[cable_num].stat = WAIT_DATA2;
- }else if(MSG_TWO_BYTE == analyzed_status[cable_num].type){
- midi_event[cable_num].length = 2;
- analyzed_status[cable_num].stat = END_ANALYSIS;
- }
- break;
-
- case START_ANALYSIS:
- break;
-
- default:
- break;
- }
- }
-
- if(END_ANALYSIS == analyzed_status[cable_num].stat){
- return true;
- }else{
- return false;
- }
-
-}
-
-
-void midiGenerateUsbPacket(uint8_t cable_num)
-{
- uint8_t msg_buf[4] = {0x00,0x00,0x00,0x00};
- uint32_t cnt_remain=0, cnt_length;
-
- switch(analyzed_status[cable_num].type){
-
- case MSG_ONE_BYTE:
- //byte 0: cable number + code index number
- msg_buf[0] = (cable_num << 4) + ((midi_event[cable_num].midi_byte[0] & 0xF0) >> 4);
-
- sendMidiMessage(msg_buf,4);
- break;
-
- case MSG_TWO_BYTE:
- case MSG_THREE_BYTE:
- //byte 0: cable number + code index number
- if(analyzed_status[cable_num].is_system_common){
- msg_buf[0] = (cable_num << 4) + midi_event[cable_num].length;
- }else{
- msg_buf[0] = (cable_num << 4) + ((midi_event[cable_num].midi_byte[0] & 0xF0) >> 4);
- }
-
- //byte 1-3
- for(uint32_t i=0; i<midi_event[cable_num].length; i++){
- msg_buf[i+1] = midi_event[cable_num].midi_byte[i];
- }
-
- sendMidiMessage(msg_buf,4);
- break;
-
- case MSG_SYSEX:
- for(cnt_length = 0; cnt_length < midi_event[cable_num].length; cnt_length++){
- if( 0xF7 !=midi_event[cable_num].midi_byte[cnt_length] ){
- if(2 == cnt_remain){
- msg_buf[3] = midi_event[cable_num].midi_byte[cnt_length];
- msg_buf[0] = (cable_num << 4) + 0x4; //SysEx starts or continues
- sendMidiMessage(msg_buf,4);
- }else{
- msg_buf[1 + cnt_remain] = midi_event[cable_num].midi_byte[cnt_length];
- }
-
-
- }else{
-
- switch (cnt_remain) {
- case 0:
- msg_buf[0] = (cable_num << 4) + 0x5; //SysEx ends with following single byte
- msg_buf[1] = 0xF7;
- msg_buf[2] = msg_buf[3] = 0x00;
- sendMidiMessage(msg_buf,4);
- break;
-
- case 1:
- msg_buf[0] = (cable_num << 4) + 0x6; //SysEx ends with following two bytes.
- msg_buf[2] = 0xF7;
- msg_buf[3] = 0x00;
- sendMidiMessage(msg_buf,4);
- break;
-
- case 2:
- msg_buf[0] = (cable_num << 4) + 0x7; //SysEx ends with following three bytes.
- msg_buf[3] = 0xF7;
- sendMidiMessage(msg_buf,4);
- break;
- default:
- break;
- }
- }
-
- cnt_remain++;
- if(cnt_remain >=3){
- cnt_remain = 0;
- }
- }
- break;
-
- default:
- break;
- }
- USBD_MIDI_SendPacket();
-}
-
-void midiProcess(){
-
- for(uint32_t cable_num=0; cable_num<MIDI_IN_JACK_NUM; cable_num++){
- while( FUNC_SUCCESS == midiGetFromJackRx(cable_num) ){
- if( midiEventIsGenerated(cable_num) ){// Generate MIDI event from UART buffer.
- //Analyze MIDI Message.
- midiGenerateUsbPacket(cable_num);
- }
- }
- }
-}
-
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