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BUG 11301: Prevent Multiple StartIDPS

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This commit is contained in:
Russell Gallop
2011-09-15 11:22:15 +01:00
parent f5ff31d730
commit 5d47bbe30e
1 changed files with 17 additions and 12 deletions
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29
module_usb_midi/src/usb_midi.xc
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@@ -74,6 +74,7 @@ extern int data_to_send;
//// state for GetDevAuthenticationSignature
//int startup = 1;
extern unsigned authenticating;
extern unsigned identificationstarted;
extern port p_i2c_scl;
extern port p_i2c_sda;
@@ -321,18 +322,22 @@ chanend c_iap, chanend ?c_i2c // iOS stuff
break;
case !(isTX || isRX) => iap_get_ack_or_reset_or_data(c_iap, is_ack, is_reset, datum):
if (is_reset) {
authenticating = 1;
// Start buffer with StartIDPS message in
iap_bufferlen = StartIDPS(iap_buffer);
port32A_set(P32A_I2C_NOTMIDI);
for (int i = 0; i != iap_bufferlen; i++) {
enqueue(to_host_fifo, iap_buffer[i]);
}
//dump(to_host_fifo);
// Start the ball rolling (so I will be expecting an ack)
outuint(c_iap, dequeue(to_host_fifo));
ith_count++;
// Do regardless
authenticating = 1;
port32A_set(P32A_I2C_NOTMIDI);
// Prevent multiple issuing of StartIDPS (may need to handle it getting lost)
if (!identificationstarted) {
// Start buffer with StartIDPS message in
iap_bufferlen = StartIDPS(iap_buffer);
for (int i = 0; i != iap_bufferlen; i++) {
enqueue(to_host_fifo, iap_buffer[i]);
}
//dump(to_host_fifo);
// Start the ball rolling (so I will be expecting an ack)
outuint(c_iap, dequeue(to_host_fifo));
ith_count++;
identificationstarted = 1;
}
} else {
//printstrln("iap_get_ack_or_data");
if (is_ack) {