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ftdiJtagMPSSE: Fix TCK toggle for large numbers.

This commit is contained in:
Uwe Bonnes 2021-09-19 17:28:41 +02:00
parent cee91fa5a1
commit f9a62b418b
1 changed files with 18 additions and 11 deletions
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29
src/ftdiJtagMPSSE.cpp
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@ -169,17 +169,24 @@ int FtdiJtagMPSSE::toggleClk(uint8_t tms, uint8_t tdi, uint32_t clk_len)
if (_ftdi->type == TYPE_2232H || _ftdi->type == TYPE_4232H ||
_ftdi->type == TYPE_232H) {
uint8_t buf[] = {static_cast<uint8_t>(0x8f), 0, 0};
if (clk_len > 8) {
buf[1] = ((len / 8) ) & 0xff;
buf[2] = ((len / 8) >> 8) & 0xff;
mpsse_store(buf, 3);
len %= 8;
}
if (len > 0) {
buf[0] = 0x8E;
buf[1] = len - 1;
mpsse_store(buf, 2);
while (len) {
unsigned int chunk = len;
if (chunk > 0x10000 * 8)
chunk = 0x10000 * 8;
if (chunk > 8) {
unsigned cycles8 = chunk / 8;
len -= cycles8 * 8;
cycles8 --;
buf[1] = ((cycles8) ) & 0xff;
buf[2] = ((cycles8) >> 8) & 0xff;
mpsse_store(buf, 3);
}
if (len && len < 9) {
buf[0] = 0x8E;
buf[1] = len - 1;
mpsse_store(buf, 2);
len = 0;
}
}
ret = clk_len;
} else {