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ibmpc: Fix AT 'request to send' signaling

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Without this fix Realforce 101 PS/2 fails to receive 'set indicator'
command sometimes when pressing Caps Lock and some keys simultaneously.

before fix:
      ____     ______
clock     \___/
      ________
data          \_______
          | 100|

after fix:
      ____          __
clock     \________/
      ________
data          \_______
          | 100| 100|
This commit is contained in:
tmk 2020-05-13 22:32:14 +09:00
parent c6a6049bc8
commit 54e3c239fc
1 changed files with 1 additions and 0 deletions
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tmk_core/protocol/ibmpc.c
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@ -109,6 +109,7 @@ int16_t ibmpc_host_send(uint8_t data)
/* 'Request to Send' and Start bit */ /* 'Request to Send' and Start bit */
data_lo(); data_lo();
wait_us(100);
clock_hi(); clock_hi();
WAIT(clock_lo, 10000, 1); // 10ms [5]p.50 WAIT(clock_lo, 10000, 1); // 10ms [5]p.50