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Diffstat (limited to 'protocol')
-rw-r--r--protocol/ps2_busywait.c11
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;