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adb: Fix comment of SRQ(Service Request)

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This commit is contained in:
tmk 2022-05-13 23:43:30 +09:00
parent ca1af1a03f
commit 894f6b2ae5
1 changed files with 7 additions and 5 deletions
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12
tmk_core/protocol/adb.c
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@ -164,7 +164,7 @@ uint8_t adb_host_talk_buf(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t len)
// the stop by a minimum of 140 J.lS beyond its normal duration, as shown in Figure 8-15."
// http://ww1.microchip.com/downloads/en/AppNotes/00591b.pdf
if (!data_in()) { adb_srq = true; } else { adb_srq = false; }
if (!wait_data_hi(500)) { // Service Request(310us Adjustable Keyboard): just ignored
if (!wait_data_hi(500)) { // wait for end of SRQ:(310us Adjustable Keyboard)
xprintf("R");
sei();
return 0;
@ -198,12 +198,14 @@ uint8_t adb_host_talk_buf(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t len)
// |________| |
//
uint8_t lo = (uint8_t) wait_data_hi(130);
if (!lo)
goto error; // no more bit or after stop bit
if (!lo) {
goto error; // SRQ?
}
uint8_t hi = (uint8_t) wait_data_lo(lo);
if (!hi)
goto error; // stop bit extedned by Srq?
if (!hi) {
goto error; // stop bit
}
if (n/8 >= len) continue; // can't store in buf