diff options
Diffstat (limited to 'protocol')
| -rw-r--r-- | protocol/ps2_busywait.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/protocol/ps2_busywait.c b/protocol/ps2_busywait.c index 1e29258895..5ab377877e 100644 --- a/protocol/ps2_busywait.c +++ b/protocol/ps2_busywait.c @@ -104,6 +104,7 @@ uint8_t ps2_host_send(uint8_t data) WAIT(clock_hi, 50, 8); WAIT(data_hi, 50, 9); + inhibit(); res = ps2_host_recv_response(); ERROR: inhibit(); @@ -113,12 +114,14 @@ ERROR: /* receive data when host want else inhibit communication */ uint8_t ps2_host_recv_response(void) { - // TODO: // Command might take 20ms to response([3]p.21) // TrackPoint might take 25ms ([5]2.7) + // 250 * 100us(wait for start bit in ps2_host_recv) uint8_t data = 0; - uint8_t try = 200; - while (try-- && (data = ps2_host_recv())) ; + uint8_t try = 250; + do { + data = ps2_host_recv(); + } while (try-- && ps2_error); return data; } @@ -172,7 +175,7 @@ uint8_t ps2_host_recv(void) return data; ERROR: if (ps2_error > PS2_ERR_STARTBIT3) { - printf("x%02X\n", ps2_error); + xprintf("x%02X\n", ps2_error); } inhibit(); return 0; |