FreeCalypso > hg > freecalypso-tools
diff miscutil/arfcn2ti.c @ 758:b8cb116a7dc7
arfcn2ti utility added to miscutil
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 27 Nov 2020 03:53:11 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/miscutil/arfcn2ti.c Fri Nov 27 03:53:11 2020 +0000 @@ -0,0 +1,67 @@ +/* + * TI's TCS211 L1 does not use standard ARFCNs internally, instead it uses + * its own non-standard radio_freq numbers in their place. Other firmware + * components and all external interfaces do use standard ARFCNs, thus + * conversion functions are invoked at appropriate points in the firmware. + * However, L1-internal radio_freq numbers are emitted in L1 debug traces, + * thus anyone looking at these traces needs to be able to convert between + * standard ARFCNs and L1-internal radio_freq. + * + * The present utility converts a standard ARFCN into TI L1 radio_freq. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> + +main(argc, argv) + char **argv; +{ + int arfcn; + + if (argc != 3) { +usage: fprintf(stderr, "usage: %s {eu|us} arfcn\n", argv[0]); + exit(1); + } + arfcn = atoi(argv[2]); + if (!strcmp(argv[1], "eu")) + arfcn2ti_eu(arfcn); + else if (!strcmp(argv[1], "us")) + arfcn2ti_us(arfcn); + else + goto usage; + exit(0); +} + +arfcn2ti_eu(arfcn) +{ + if (arfcn == 0) + arfcn = 174; + else if ((arfcn >= 975) && (arfcn <= 1023)) + arfcn -= 850; + else if ((arfcn >= 512) && (arfcn <= 885)) + arfcn -= 337; + else if ((arfcn >= 1) && (arfcn <= 124)) + ; + else { + fprintf(stderr, + "error: specified ARFCN is invalid for dual-EU\n"); + exit(1); + } + printf("%d\n", arfcn); +} + +arfcn2ti_us(arfcn) +{ + if ((arfcn >= 128) && (arfcn <= 251)) + arfcn -= 127; + else if ((arfcn >= 512) && (arfcn <= 810)) + arfcn -= 387; + else { + fprintf(stderr, + "error: specified ARFCN is invalid for dual-US\n"); + exit(1); + } + printf("%d\n", arfcn); +}