coding: implement TCH/F9.6, TCH/[FH]4.8, TCH/H2.4, TCH/F14.4
Implement all CSD specific channel modes, except TCH/F2.4. All of
these modes are more or less similar to each other. The TCH/F2.4
is more similar to TCH/FS and slightly more complicated.
FACCH/F and FACCH/H will be implemented in a follow-up change.
Change-Id: Ib482817b5f6a4e3c7299f6e0b3841143b60fc93d
Related: OS#1572
diff --git a/include/osmocom/coding/gsm0503_coding.h b/include/osmocom/coding/gsm0503_coding.h
index 2112b0f..c6181d8 100644
--- a/include/osmocom/coding/gsm0503_coding.h
+++ b/include/osmocom/coding/gsm0503_coding.h
@@ -89,4 +89,24 @@
int gsm0503_sch_encode(ubit_t *burst, const uint8_t *sb_info);
int gsm0503_sch_decode(uint8_t *sb_info, const sbit_t *burst);
+int gsm0503_tch_fr96_encode(ubit_t *bursts, const ubit_t *data);
+int gsm0503_tch_fr96_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total);
+
+int gsm0503_tch_fr48_encode(ubit_t *bursts, const ubit_t *data);
+int gsm0503_tch_fr48_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total);
+
+int gsm0503_tch_hr48_encode(ubit_t *bursts, const ubit_t *data);
+int gsm0503_tch_hr48_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total);
+
+int gsm0503_tch_hr24_encode(ubit_t *bursts, const ubit_t *data);
+int gsm0503_tch_hr24_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total);
+
+int gsm0503_tch_fr144_encode(ubit_t *bursts, const ubit_t *data);
+int gsm0503_tch_fr144_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total);
+
/*! @} */
diff --git a/src/coding/gsm0503_coding.c b/src/coding/gsm0503_coding.c
index f42deb2..b761cd0 100644
--- a/src/coding/gsm0503_coding.c
+++ b/src/coding/gsm0503_coding.c
@@ -3292,4 +3292,301 @@
return 0;
}
+/*
+ * GSM CSD transcoding
+ */
+
+static inline void _tch_csd_burst_map(ubit_t *burst, const ubit_t *iB)
+{
+ for (unsigned int i = 0; i < 57; i++) {
+ burst[i] |= iB[i];
+ burst[59 + i] |= iB[57 + i];
+ }
+
+ burst[57] = 0; /* hl(B) */
+ burst[58] = 0; /* hu(B) */
+}
+
+/*! Perform channel encoding of a TCH/F9.6 channel as per section 3.3.
+ * \param[out] bursts Caller-allocated buffer for symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[in] data Data to be encoded (240 unpacked bits).
+ * \returns 0 in case of success; negative on error. */
+int gsm0503_tch_fr96_encode(ubit_t *bursts, const ubit_t *data)
+{
+ ubit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[4 * 60 + 4];
+
+ /* 3.3.2 Block code: b1(60) + b2(60) + b3(60) + b4(60) + pad(4) */
+ memcpy(&conv[0], &data[0], 4 * 60);
+ memset(&conv[240], 0, 4);
+
+ /* 3.3.3 Convolutional encoder */
+ osmo_conv_encode(&gsm0503_tch_f96, &conv[0], &cB[0]);
+
+ /* 3.3.4 Interleaving */
+ memset(&iB[0], 0, sizeof(iB));
+ gsm0503_tch_f96_interleave(&cB[0], &iB[0]);
+
+ /* 3.3.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++)
+ _tch_csd_burst_map(&bursts[i * 116], &iB[i * 114]);
+
+ return 0;
+}
+
+/*! Perform channel decoding of a TCH/F9.6 channel as per section 3.3.
+ * \param[out] data Caller-allocated buffer for decoded data (240 unpacked bits).
+ * \param[in] bursts Buffer containing the symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[out] n_errors Number of detected bit errors.
+ * \param[out] n_bits_total Total number of bits.
+ * \returns Number of unpacked bits used in the output buffer; negative on error. */
+int gsm0503_tch_fr96_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total)
+{
+ sbit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[4 * 60 + 4];
+
+ /* 3.3.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++) {
+ memcpy(&iB[i * 114], &bursts[i * 116], 57);
+ memcpy(&iB[i * 114 + 57], &bursts[i * 116 + 59], 57);
+ }
+
+ /* 3.3.4 Interleaving */
+ gsm0503_tch_f96_deinterleave(&cB[0], &iB[0]);
+
+ /* 3.3.3 Convolutional encoder */
+ osmo_conv_decode_ber(&gsm0503_tch_f96, &cB[0], &conv[0], n_errors, n_bits_total);
+
+ /* 3.3.2 Block code: b1(60) + b2(60) + b3(60) + b4(60) + pad(4) */
+ memcpy(&data[0], &conv[0], 4 * 60);
+
+ return 4 * 60;
+}
+
+/*! Perform channel encoding of a TCH/F4.8 channel as per section 3.4.
+ * \param[out] bursts Caller-allocated buffer for symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[in] data Data to be encoded (120 unpacked bits).
+ * \returns 0 in case of success; negative on error */
+int gsm0503_tch_fr48_encode(ubit_t *bursts, const ubit_t *data)
+{
+ ubit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[2 * 60 + 32];
+
+ /* 3.4.2 Block code:
+ *
+ * Sixteen bits equal to 0 are added to the 60 information bits, the result
+ * being a block of 76 bits, {u(0),u(1),...,u(75)}, with:
+ *
+ * u(19k+p) = d(15k+p) for k = 0,1,2,3 and p = 0,1,...,14;
+ * u(19k+p) = 0 for k = 0,1,2,3 and p = 15,16,17,18.
+ *
+ * Two such blocks forming a block of 152 bits: u1 + u2. */
+ for (unsigned int k = 0; k < 2 * 4; k++) {
+ memcpy(&conv[19 * k], &data[15 * k], 15);
+ memset(&conv[19 * k + 15], 0, 4);
+ }
+
+ /* 3.4.3 Convolutional encoder */
+ osmo_conv_encode(&gsm0503_tch_f48, &conv[0], &cB[0]);
+
+ /* 3.4.4 Interleaving: as specified for the TCH/F9.6 in subclause 3.3.4 */
+ memset(&iB[0], 0, sizeof(iB));
+ gsm0503_tch_f96_interleave(&cB[0], &iB[0]);
+
+ /* 3.4.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++)
+ _tch_csd_burst_map(&bursts[i * 116], &iB[i * 114]);
+
+ return 0;
+}
+
+/*! Perform channel decoding of a TCH/F4.8 channel as per section 3.4.
+ * \param[out] data Caller-allocated buffer for decoded data (120 unpacked bits).
+ * \param[in] bursts Buffer containing the symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[out] n_errors Number of detected bit errors.
+ * \param[out] n_bits_total Total number of bits.
+ * \returns Number of unpacked bits used in the output buffer; negative on error. */
+int gsm0503_tch_fr48_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total)
+{
+ sbit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[2 * 60 + 32];
+
+ /* 3.4.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++) {
+ memcpy(&iB[i * 114], &bursts[i * 116], 57);
+ memcpy(&iB[i * 114 + 57], &bursts[i * 116 + 59], 57);
+ }
+
+ /* 3.4.4 Interleaving: as specified for the TCH/F9.6 in subclause 3.3.4 */
+ gsm0503_tch_f96_deinterleave(&cB[0], &iB[0]);
+
+ /* 3.4.3 Convolutional encoder */
+ osmo_conv_decode_ber(&gsm0503_tch_f48, &cB[0], &conv[0], n_errors, n_bits_total);
+
+ /* 3.4.2 Block code:
+ *
+ * Sixteen bits equal to 0 are added to the 60 information bits, the result
+ * being a block of 76 bits, {u(0),u(1),...,u(75)}, with:
+ *
+ * u(19k+p) = d(15k+p) for k = 0,1,2,3 and p = 0,1,...,14;
+ * u(19k+p) = 0 for k = 0,1,2,3 and p = 15,16,17,18.
+ *
+ * Two such blocks forming a block of 152 bits: u1 + u2. */
+ for (unsigned int k = 0; k < 2 * 4; k++)
+ memcpy(&data[15 * k], &conv[19 * k], 15);
+
+ return 2 * 60;
+}
+
+/*! Perform channel encoding of a TCH/H4.8 channel as per section 3.5.
+ * The algorithm is identical to TCH/F9.6, so it's just a wrapper.
+ * \param[out] bursts Caller-allocated buffer for symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[in] data Data to be encoded (240 unpacked bits).
+ * \returns 0 in case of success; negative on error */
+int gsm0503_tch_hr48_encode(ubit_t *bursts, const ubit_t *data)
+{
+ return gsm0503_tch_fr96_encode(bursts, data);
+}
+
+/*! Perform channel decoding of a TCH/H4.8 channel as per section 3.5.
+ * The algorithm is identical to TCH/F9.6, so it's just a wrapper.
+ * \param[out] data Caller-allocated buffer for decoded data (240 unpacked bits).
+ * \param[in] bursts Buffer containing the symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[out] n_errors Number of detected bit errors.
+ * \param[out] n_bits_total Total number of bits.
+ * \returns Number of unpacked bits used in the output buffer; negative on error. */
+int gsm0503_tch_hr48_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total)
+{
+ return gsm0503_tch_fr96_decode(data, bursts, n_errors, n_bits_total);
+}
+
+/*! Perform channel encoding of a TCH/H2.4 channel as per section 3.7.
+ * \param[out] bursts Caller-allocated buffer for symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[in] data Data to be encoded (144 unpacked bits).
+ * \returns 0 in case of success; negative on error */
+int gsm0503_tch_hr24_encode(ubit_t *bursts, const ubit_t *data)
+{
+ ubit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[2 * 72 + 8];
+
+ /* 3.7.2 Block code: d1(72) + pad(4) + d2(72) + pad(4) */
+ memset(&conv[0], 0, sizeof(conv));
+ memcpy(&conv[0], &data[0], 72);
+ memcpy(&conv[76], &data[72], 72);
+
+ /* 3.7.3 Convolutional encoder: as specified for the TCH/F4.8 in subclause 3.4.3 */
+ osmo_conv_encode(&gsm0503_tch_f48, &conv[0], &cB[0]);
+
+ /* 3.7.4 Interleaving: as specified for the TCH/F9.6 in subclause 3.3.4 */
+ memset(&iB[0], 0, sizeof(iB));
+ gsm0503_tch_f96_interleave(&cB[0], &iB[0]);
+
+ /* 3.7.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++)
+ _tch_csd_burst_map(&bursts[i * 116], &iB[i * 114]);
+
+ return 0;
+}
+
+/*! Perform channel decoding of a TCH/H2.4 channel as per section 3.7.
+ * \param[out] data Caller-allocated buffer for decoded data (144 unpacked bits).
+ * \param[in] bursts Buffer containing the symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[out] n_errors Number of detected bit errors.
+ * \param[out] n_bits_total Total number of bits.
+ * \returns Number of unpacked bits used in the output buffer; negative on error. */
+int gsm0503_tch_hr24_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total)
+{
+ sbit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[120 + 32];
+
+ /* 3.7.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++) {
+ memcpy(&iB[i * 114], &bursts[i * 116], 57);
+ memcpy(&iB[i * 114 + 57], &bursts[i * 116 + 59], 57);
+ }
+
+ /* 3.7.4 Interleaving: as specified for the TCH/F9.6 in subclause 3.3.4 */
+ gsm0503_tch_f96_deinterleave(&cB[0], &iB[0]);
+
+ /* 3.7.3 Convolutional encoder: as specified for the TCH/F4.8 in subclause 3.4.3 */
+ osmo_conv_decode_ber(&gsm0503_tch_f48, &cB[0], &conv[0], n_errors, n_bits_total);
+
+ /* 3.7.2 Block code: d1(72) + pad(4) + d2(72) + pad(4) */
+ memcpy(&data[0], &conv[0], 72);
+ memcpy(&data[72], &conv[76], 72);
+
+ return 2 * 72;
+}
+
+/*! Perform channel encoding of a TCH/F14.4 channel as per section 3.8.
+ * \param[out] bursts Caller-allocated buffer for symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[in] data Data to be encoded (290 unpacked bits).
+ * \returns 0 in case of success; negative on error */
+int gsm0503_tch_fr144_encode(ubit_t *bursts, const ubit_t *data)
+{
+ ubit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[290 + 4];
+
+ /* 3.8.2 Block code: b(290) + pad(4) */
+ memcpy(&conv[0], &data[0], 290);
+ memset(&conv[290], 0, 4);
+
+ /* 3.8.3 Convolutional encoder */
+ osmo_conv_encode(&gsm0503_tch_f144, &conv[0], &cB[0]);
+
+ /* 3.8.4 Interleaving */
+ memset(&iB[0], 0, sizeof(iB));
+ gsm0503_tch_f96_interleave(&cB[0], &iB[0]);
+
+ /* 3.8.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++)
+ _tch_csd_burst_map(&bursts[i * 116], &iB[i * 114]);
+
+ return 0;
+}
+
+/*! Perform channel decoding of a TCH/14.4 channel as per section 3.8.
+ * \param[out] data Caller-allocated buffer for decoded data (290 unpacked bits).
+ * \param[in] bursts Buffer containing the symbols of 22 bursts,
+ * 22 * 2 * 58 == 2552 bits total.
+ * \param[out] n_errors Number of detected bit errors.
+ * \param[out] n_bits_total Total number of bits.
+ * \returns Number of unpacked bits used in the output buffer; negative on error. */
+int gsm0503_tch_fr144_decode(ubit_t *data, const sbit_t *bursts,
+ int *n_errors, int *n_bits_total)
+{
+ sbit_t iB[22 * 114], cB[4 * 114];
+ ubit_t conv[294];
+
+ /* 3.8.5 Mapping on a burst: as specified for TCH/FS in subclause 3.1.4 */
+ for (unsigned int i = 0; i < 22; i++) {
+ memcpy(&iB[i * 114], &bursts[i * 116], 57);
+ memcpy(&iB[i * 114 + 57], &bursts[i * 116 + 59], 57);
+ }
+
+ /* 3.8.4 Interleaving: as specified for the TCH/F9.6 in subclause 3.3.4 */
+ gsm0503_tch_f96_deinterleave(&cB[0], &iB[0]);
+
+ /* 3.8.3 Convolutional encoder */
+ osmo_conv_decode_ber(&gsm0503_tch_f144, &cB[0], &conv[0], n_errors, n_bits_total);
+
+ /* 3.8.2 Block code: b(290) + pad(4) */
+ memcpy(&data[0], &conv[0], 290);
+
+ return 290;
+}
+
/*! @} */
diff --git a/src/coding/libosmocoding.map b/src/coding/libosmocoding.map
index a78da27..a645a58 100644
--- a/src/coding/libosmocoding.map
+++ b/src/coding/libosmocoding.map
@@ -129,5 +129,16 @@
gsm0503_detect_afs_dtx_frame2;
gsm0503_detect_ahs_dtx_frame2;
+gsm0503_tch_fr96_encode;
+gsm0503_tch_fr96_decode;
+gsm0503_tch_fr48_encode;
+gsm0503_tch_fr48_decode;
+gsm0503_tch_hr48_encode;
+gsm0503_tch_hr48_decode;
+gsm0503_tch_hr24_encode;
+gsm0503_tch_hr24_decode;
+gsm0503_tch_fr144_encode;
+gsm0503_tch_fr144_decode;
+
local: *;
};
diff --git a/tests/coding/coding_test.c b/tests/coding/coding_test.c
index 8a0506a..a13dc4c 100644
--- a/tests/coding/coding_test.c
+++ b/tests/coding/coding_test.c
@@ -489,6 +489,92 @@
uint8_t test_speech_efr[31];
uint8_t test_speech_hr[14];
+struct csd_test_case {
+ const char *name;
+ unsigned int num_bits;
+ int (*enc_fn)(ubit_t *out, const ubit_t *in);
+ int (*dec_fn)(ubit_t *out, const sbit_t *in, int *ne, int *nb);
+};
+
+static const struct csd_test_case csd_tests[] = {
+ {
+ .name = "TCH/F9.6",
+ .num_bits = 4 * 60,
+ .enc_fn = &gsm0503_tch_fr96_encode,
+ .dec_fn = &gsm0503_tch_fr96_decode,
+ },
+ {
+ .name = "TCH/F4.8",
+ .num_bits = 2 * 60,
+ .enc_fn = &gsm0503_tch_fr48_encode,
+ .dec_fn = &gsm0503_tch_fr48_decode,
+ },
+ {
+ .name = "TCH/H4.8",
+ .num_bits = 4 * 60,
+ .enc_fn = &gsm0503_tch_hr48_encode,
+ .dec_fn = &gsm0503_tch_hr48_decode,
+ },
+ {
+ .name = "TCH/H2.4",
+ .num_bits = 2 * 72,
+ .enc_fn = &gsm0503_tch_hr24_encode,
+ .dec_fn = &gsm0503_tch_hr24_decode,
+ },
+ {
+ .name = "TCH/F14.4",
+ .num_bits = 290,
+ .enc_fn = &gsm0503_tch_fr144_encode,
+ .dec_fn = &gsm0503_tch_fr144_decode,
+ },
+};
+
+static void test_csd(const struct csd_test_case *tc)
+{
+ const uint8_t patterns[] = { 0x00, 0xaa, 0xff };
+ ubit_t bursts_u[116 * (22 + 8)] = { 0 };
+ sbit_t bursts_s[116 * (22 + 8)] = { 0 };
+ ubit_t data[512];
+ int rc;
+
+ /* Encode three data blocks, each block filled-in with a pattern */
+ for (unsigned int i = 0; i < ARRAY_SIZE(patterns); i++) {
+ for (unsigned int j = 0; j < tc->num_bits; j++)
+ data[j] = (patterns[i] & (1 << (j % 8))) != 0;
+
+ rc = tc->enc_fn(&bursts_u[i * 4 * 116], &data[0]);
+ CHECK_RC_OR_RET(rc == 0, "encoding");
+ }
+
+ /* TODO: test FACCH stealing */
+
+ /* Prepare soft-bits */
+ osmo_ubit2sbit(&bursts_s[0], &bursts_u[0], sizeof(bursts_s));
+
+ /* Decode the soft-bits, print decoded blocks */
+ for (unsigned int i = 0; i < ARRAY_SIZE(patterns); i++) {
+ int n_errors, n_bits_total;
+
+ rc = tc->dec_fn(&data[0], &bursts_s[i * 4 * 116],
+ &n_errors, &n_bits_total);
+ CHECK_RC_OR_RET(rc == tc->num_bits, "decoding");
+
+ printf("%s(%s): block #%u (pattern 0x%02x): n_errors=%d / n_bits_total=%d\n",
+ __func__, tc->name, i, patterns[i], n_errors, n_bits_total);
+
+ for (unsigned int j = 0; j < tc->num_bits; j++) {
+ if (j && j % 64 == 0)
+ printf("\n");
+ else if (j && j % 8 == 0)
+ printf(" ");
+ printf("%c", data[j] ? '1' : '0');
+ }
+ printf("\n");
+ }
+
+ printf("\n");
+}
+
int main(int argc, char **argv)
{
int i, len_l2, len_mb;
@@ -549,6 +635,10 @@
}
}
+ printf("\nTesting CSD functions:\n");
+ for (i = 0; i < ARRAY_SIZE(csd_tests); i++)
+ test_csd(&csd_tests[i]);
+
printf("Success\n");
return 0;
diff --git a/tests/coding/coding_test.ok b/tests/coding/coding_test.ok
index 0927a33..e1bd89d 100644
--- a/tests/coding/coding_test.ok
+++ b/tests/coding/coding_test.ok
@@ -367,4 +367,80 @@
81 7f 7f 7f 81 7f 7f 81 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 81 81 7f 81 7f 7f 81 81 81 81 81 81 7f 7f 81 7f 81 7f 7f 81 7f 7f 7f 7f 81 7f 7f 7f 81 7f 7f 81 81 81 7f 81 7f 7f 81 7f 7f 81 7f 7f 81 7f 81 7f 81 7f 81 81 7f 7f 7f 81 7f 81 81 81 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 81 7f 81 81 81 81 7f 7f 7f 81 81 81 7f 7f 7f 81 81 7f 81 7f 7f 7f 81 7f 7f 81
81 81 81 81 7f 7f 7f 7f 81 81 7f 81 7f 7f 81 7f 81 81 7f 81 7f 7f 7f 7f 81 81 7f 81 81 81 81 7f 7f 7f 7f 81 7f 7f 81 7f 7f 81 7f 7f 7f 7f 7f 81 7f 7f 7f 81 7f 7f 81 81 7f 7f 81 7f 7f 7f 7f 7f 7f 81 81 7f 81 81 7f 81 81 7f 81 7f 7f 7f 81 81 81 81 81 7f 81 81 81 81 7f 7f 81 81 7f 7f 81 81 7f 81 81 7f 7f 7f 7f 7f 81 81 81 81 7f 7f 7f 81 7f 7f 7f 81
7f 7f 81 7f 7f 7f 81 81 7f 7f 81 81 7f 81 7f 81 81 7f 7f 81 81 7f 81 81 7f 7f 81 7f 81 81 81 7f 7f 81 7f 7f 7f 81 7f 7f 7f 81 81 7f 81 81 7f 81 7f 81 81 81 7f 7f 7f 7f 7f 81 7f 7f 7f 7f 7f 81 7f 7f 7f 7f 7f 81 7f 7f 81 7f 81 81 7f 7f 7f 81 81 81 81 81 81 81 7f 7f 81 7f 81 81 81 7f 81 7f 81 81 7f 7f 7f 7f 7f 7f 7f 81 81 81 7f 81 81 7f 7f 7f 81 7f
+
+Testing CSD functions:
+test_csd(TCH/F9.6): block #0 (pattern 0x00): n_errors=0 / n_bits_total=456
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000
+test_csd(TCH/F9.6): block #1 (pattern 0xaa): n_errors=0 / n_bits_total=456
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101
+test_csd(TCH/F9.6): block #2 (pattern 0xff): n_errors=0 / n_bits_total=456
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111
+
+test_csd(TCH/F4.8): block #0 (pattern 0x00): n_errors=0 / n_bits_total=456
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000
+test_csd(TCH/F4.8): block #1 (pattern 0xaa): n_errors=0 / n_bits_total=456
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101
+test_csd(TCH/F4.8): block #2 (pattern 0xff): n_errors=0 / n_bits_total=456
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111
+
+test_csd(TCH/H4.8): block #0 (pattern 0x00): n_errors=0 / n_bits_total=456
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000
+test_csd(TCH/H4.8): block #1 (pattern 0xaa): n_errors=0 / n_bits_total=456
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101
+test_csd(TCH/H4.8): block #2 (pattern 0xff): n_errors=0 / n_bits_total=456
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111
+
+test_csd(TCH/H2.4): block #0 (pattern 0x00): n_errors=0 / n_bits_total=456
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000
+test_csd(TCH/H2.4): block #1 (pattern 0xaa): n_errors=0 / n_bits_total=456
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101
+test_csd(TCH/H2.4): block #2 (pattern 0xff): n_errors=0 / n_bits_total=456
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111
+
+test_csd(TCH/F14.4): block #0 (pattern 0x00): n_errors=0 / n_bits_total=456
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+00000000 00000000 00000000 00000000 00
+test_csd(TCH/F14.4): block #1 (pattern 0xaa): n_errors=0 / n_bits_total=456
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01010101 01010101 01010101 01010101
+01010101 01010101 01010101 01010101 01
+test_csd(TCH/F14.4): block #2 (pattern 0xff): n_errors=0 / n_bits_total=456
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11111111 11111111 11111111 11111111
+11111111 11111111 11111111 11111111 11
+
Success