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-rw-r--r--tmk_core/protocol/lufa/lufa.c32
-rw-r--r--tmk_core/protocol/lufa/lufa.h4
2 files changed, 25 insertions, 11 deletions
diff --git a/tmk_core/protocol/lufa/lufa.c b/tmk_core/protocol/lufa/lufa.c
index 0971897706..6dd5959dc4 100644
--- a/tmk_core/protocol/lufa/lufa.c
+++ b/tmk_core/protocol/lufa/lufa.c
@@ -1252,28 +1252,40 @@ void cc_callback(MidiDevice * device,
// midi_send_cc(device, (chan + 1) % 16, num, val);
}
+#ifdef API_SYSEX_ENABLE
uint8_t midi_buffer[MIDI_SYSEX_BUFFER] = {0};
+#endif
void sysex_callback(MidiDevice * device, uint16_t start, uint8_t length, uint8_t * data) {
#ifdef API_SYSEX_ENABLE
// SEND_STRING("\n");
// send_word(start);
// SEND_STRING(": ");
+ // Don't store the header
+ int16_t pos = start - 4;
for (uint8_t place = 0; place < length; place++) {
// send_byte(*data);
- midi_buffer[start + place] = *data;
- if (*data == 0xF7) {
- // SEND_STRING("\nRD: ");
- // for (uint8_t i = 0; i < start + place + 1; i++){
- // send_byte(midi_buffer[i]);
- // SEND_STRING(" ");
- // }
- uint8_t * decoded = malloc(sizeof(uint8_t) * (sysex_decoded_length(start + place - 4)));
- uint16_t decode_length = sysex_decode(decoded, midi_buffer + 4, start + place - 4);
- process_api(decode_length, decoded);
+ if (pos >= 0) {
+ if (*data == 0xF7) {
+ // SEND_STRING("\nRD: ");
+ // for (uint8_t i = 0; i < start + place + 1; i++){
+ // send_byte(midi_buffer[i]);
+ // SEND_STRING(" ");
+ // }
+ const unsigned decoded_length = sysex_decoded_length(pos);
+ uint8_t decoded[API_SYSEX_MAX_SIZE];
+ sysex_decode(decoded, midi_buffer, pos);
+ process_api(decoded_length, decoded);
+ return;
+ }
+ else if (pos >= MIDI_SYSEX_BUFFER) {
+ return;
+ }
+ midi_buffer[pos] = *data;
}
// SEND_STRING(" ");
data++;
+ pos++;
}
#endif
}
diff --git a/tmk_core/protocol/lufa/lufa.h b/tmk_core/protocol/lufa/lufa.h
index b11854101d..a049fd43c9 100644
--- a/tmk_core/protocol/lufa/lufa.h
+++ b/tmk_core/protocol/lufa/lufa.h
@@ -70,7 +70,6 @@ typedef struct {
#ifdef MIDI_ENABLE
void MIDI_Task(void);
MidiDevice midi_device;
- #define MIDI_SYSEX_BUFFER 32
#endif
#ifdef API_ENABLE
@@ -79,6 +78,9 @@ typedef struct {
#ifdef API_SYSEX_ENABLE
#include "api_sysex.h"
+ // Allocate space for encoding overhead.
+ //The header and terminator are not stored to save a few bytes of precious ram
+ #define MIDI_SYSEX_BUFFER (API_SYSEX_MAX_SIZE + API_SYSEX_MAX_SIZE / 7 + (API_SYSEX_MAX_SIZE % 7 ? 1 : 0))
#endif
// #if LUFA_VERSION_INTEGER < 0x120730