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fw/icE1usb-test: Adjust the pass/fail threshold for VCXO 

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I3540129b9a04cda36c94c3b6ff0950ca23d48fd1
This commit is contained in:
Sylvain Munaut 2023-01-21 07:38:17 +01:00
parent 98a9b663cd
commit 21500babe0
1 changed files with 12 additions and 5 deletions
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17
firmware/ice40-riscv/icE1usb-test/fw_app.c
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@ -267,19 +267,26 @@ test_done(void)
printf("\n");
ok = limit(test.freq_diff[0], -100, 100); gok &= ok;
/* In theory -768 ... 768, we we limit to 25% of that */
ok = limit(test.freq_diff[0], -192, 192); gok &= ok;
printf("[+] Base : %d - %s\n", test.freq_diff[0], ok ? "PASS" : "FAIL");
ok = limit(-d_hi_n, 2304, 3840); gok &= ok;
/* Theoritical value is 3072. Allow -12.5% ... 25% deviation */
ok = limit(-d_hi_n, 2688, 3840); gok &= ok;
printf("[+] Hi Negative swing: %d - %s\n", d_hi_n, ok ? "PASS" : "FAIL");
ok = limit( d_hi_p, 2304, 3840); gok &= ok;
ok = limit( d_hi_p, 2688, 3840); gok &= ok;
printf("[+] Hi Positive swing: %d - %s\n", d_hi_p, ok ? "PASS" : "FAIL");
ok = limit(-d_lo_n, 37, 62); gok &= ok;
/* Limit absolute and is relative to the 'hi' value */
int sl = (-d_hi_n * 3 + 91) / 182;
ok = limit(-d_lo_n, sl-4, sl+4); gok &= ok;
ok &= limit(-d_lo_n, 44, 63); gok &= ok;
printf("[+] Lo Negative swing: %d - %s\n", d_lo_n, ok ? "PASS" : "FAIL");
ok = limit( d_lo_p, 37, 62); gok &= ok;
int sl = (d_hi_p * 3 + 91) / 182;
ok = limit( d_lo_p, sl-4, sl+4); gok &= ok;
ok &= limit( d_lo_p, 44, 63); gok &= ok;
printf("[+] Lo Positive swing: %d - %s\n", d_lo_p, ok ? "PASS" : "FAIL");
printf("\n");