[PATCH1 1/4 v3] helpers: new 'AT+CMER=?' parser
Aleksander Morgado
aleksander at aleksander.es
Mon May 22 12:43:40 UTC 2017
---
Hey Colin,
Please try now with this v3 patch. I modified the helper method to allow the comma-separated number sequence you get in your EHS5 for the modes, i.e.: "(1,2)". The regex wasn't catching that logic, so instead of complicating it too much, I switched to splitting the response into groups and then parsing the groups we want independently.
See if you get +CMER setting correctly run now.
Cheers!
---
src/mm-modem-helpers.c | 123 +++++++++++++++++++++++++++++++++++++++++
src/mm-modem-helpers.h | 25 +++++++++
src/tests/test-modem-helpers.c | 68 +++++++++++++++++++++++
3 files changed, 216 insertions(+)
diff --git a/src/mm-modem-helpers.c b/src/mm-modem-helpers.c
index 679f9252..ddf69406 100644
--- a/src/mm-modem-helpers.c
+++ b/src/mm-modem-helpers.c
@@ -240,6 +240,16 @@ mm_count_bits_set (gulong number)
return c;
}
+guint
+mm_find_bit_set (gulong number)
+{
+ guint c = 0;
+
+ for (c = 0; !(number & 0x1); c++)
+ number >>= 1;
+ return c;
+}
+
/*****************************************************************************/
gchar *
@@ -2847,6 +2857,119 @@ mm_3gpp_parse_cnum_exec_response (const gchar *reply,
/*************************************************************************/
+gchar *
+mm_3gpp_build_cmer_set_request (MM3gppCmerMode mode,
+ MM3gppCmerInd ind)
+{
+ guint mode_val;
+ guint ind_val;
+
+ if (mode == MM_3GPP_CMER_MODE_DISCARD_URCS)
+ return g_strdup ("+CMER=0");
+ if (mode < MM_3GPP_CMER_MODE_DISCARD_URCS || mode > MM_3GPP_CMER_MODE_FORWARD_URCS)
+ return NULL;
+ mode_val = mm_find_bit_set (mode);
+
+ if (ind < MM_3GPP_CMER_IND_DISABLE || ind > MM_3GPP_CMER_IND_ENABLE_ALL)
+ return NULL;
+ ind_val = mm_find_bit_set (ind);
+
+ return g_strdup_printf ("+CMER=%u,0,0,%u", mode_val, ind_val);
+}
+
+gboolean
+mm_3gpp_parse_cmer_test_response (const gchar *response,
+ MM3gppCmerMode *out_supported_modes,
+ MM3gppCmerInd *out_supported_inds,
+ GError **error)
+{
+ gchar **split;
+ GError *inner_error = NULL;
+ GArray *array_supported_modes = NULL;
+ GArray *array_supported_inds = NULL;
+ gchar *aux = NULL;
+ gboolean ret = FALSE;
+ MM3gppCmerMode supported_modes = 0;
+ MM3gppCmerInd supported_inds = 0;
+ guint i;
+
+ /*
+ * AT+CMER=?
+ * +CMER: 1,0,0,(0-1),0
+ *
+ * AT+CMER=?
+ * +CMER: (0-3),(0),(0),(0-1),(0-1)
+ *
+ * AT+CMER=?
+ * +CMER: (1,2),0,0,(0-1),0
+ */
+
+ split = mm_split_string_groups (mm_strip_tag (response, "+CMER:"));
+ if (!split) {
+ inner_error = g_error_new (MM_CORE_ERROR, MM_CORE_ERROR_FAILED, "Couldn't split +CMER test response in groups");
+ goto out;
+ }
+
+ /* We want 1st and 4th groups */
+ if (g_strv_length (split) < 4) {
+ inner_error = g_error_new (MM_CORE_ERROR, MM_CORE_ERROR_FAILED, "Missing groups in +CMER test response (%u < 4)", g_strv_length (split));
+ goto out;
+ }
+
+ /* Modes in 1st group */
+ if (!(array_supported_modes = mm_parse_uint_list (split[0], &inner_error)))
+ goto out;
+ g_clear_pointer (&aux, g_free);
+
+ /* Ind settings in 4th group */
+ if (!(array_supported_inds = mm_parse_uint_list (split[3], &inner_error)))
+ goto out;
+ g_clear_pointer (&aux, g_free);
+
+ for (i = 0; i < array_supported_modes->len; i++) {
+ guint mode_val;
+
+ mode_val = g_array_index (array_supported_modes, guint, i);
+ if (mode_val >= 0 && mode_val <= 3)
+ supported_modes |= (MM3gppCmerMode) (1 << mode_val);
+ else
+ mm_dbg ("Unknown +CMER mode reported: %u", mode_val);
+ }
+
+ for (i = 0; i < array_supported_inds->len; i++) {
+ guint ind_val;
+
+ ind_val = g_array_index (array_supported_inds, guint, i);
+ if (ind_val >= 0 && ind_val <= 2)
+ supported_inds |= (MM3gppCmerInd) (1 << ind_val);
+ else
+ mm_dbg ("Unknown +CMER ind reported: %u", ind_val);
+ }
+
+ if (out_supported_modes)
+ *out_supported_modes = supported_modes;
+ if (out_supported_inds)
+ *out_supported_inds = supported_inds;
+ ret = TRUE;
+
+out:
+
+ if (array_supported_modes)
+ g_array_unref (array_supported_modes);
+ if (array_supported_inds)
+ g_array_unref (array_supported_inds);
+ g_clear_pointer (&aux, g_free);
+
+ g_strfreev (split);
+
+ if (inner_error)
+ g_propagate_error (error, inner_error);
+
+ return ret;
+}
+
+/*************************************************************************/
+
struct MM3gppCindResponse {
gchar *desc;
guint idx;
diff --git a/src/mm-modem-helpers.h b/src/mm-modem-helpers.h
index 297e15df..ab566539 100644
--- a/src/mm-modem-helpers.h
+++ b/src/mm-modem-helpers.h
@@ -57,6 +57,7 @@ GArray *mm_parse_uint_list (const gchar *str,
GError **error);
guint mm_count_bits_set (gulong number);
+guint mm_find_bit_set (gulong number);
gchar *mm_create_device_identifier (guint vid,
guint pid,
@@ -228,6 +229,30 @@ gboolean mm_3gpp_parse_clck_write_response (const gchar *reply,
GStrv mm_3gpp_parse_cnum_exec_response (const gchar *reply,
GError **error);
+/* AT+CMER=? (Mobile Equipment Event Reporting) response parser */
+typedef enum { /*< underscore_name=mm_3gpp_cmer_mode >*/
+ MM_3GPP_CMER_MODE_NONE = 0,
+ MM_3GPP_CMER_MODE_DISCARD_URCS = 1 << 0,
+ MM_3GPP_CMER_MODE_DISCARD_URCS_IF_LINK_RESERVED = 1 << 1,
+ MM_3GPP_CMER_MODE_BUFFER_URCS_IF_LINK_RESERVED = 1 << 2,
+ MM_3GPP_CMER_MODE_FORWARD_URCS = 1 << 3,
+} MM3gppCmerMode;
+typedef enum { /*< underscore_name=mm_3gpp_cmer_ind >*/
+ MM_3GPP_CMER_IND_NONE = 0,
+ /* no indicator event reporting */
+ MM_3GPP_CMER_IND_DISABLE = 1 << 0,
+ /* Only indicator events that are not caused by +CIND */
+ MM_3GPP_CMER_IND_ENABLE_NOT_CAUSED_BY_CIND = 1 << 1,
+ /* All indicator events */
+ MM_3GPP_CMER_IND_ENABLE_ALL = 1 << 2,
+} MM3gppCmerInd;
+gchar *mm_3gpp_build_cmer_set_request (MM3gppCmerMode mode,
+ MM3gppCmerInd ind);
+gboolean mm_3gpp_parse_cmer_test_response (const gchar *reply,
+ MM3gppCmerMode *supported_modes,
+ MM3gppCmerInd *supported_inds,
+ GError **error);
+
/* AT+CIND=? (Supported indicators) response parser */
typedef struct MM3gppCindResponse MM3gppCindResponse;
GHashTable *mm_3gpp_parse_cind_test_response (const gchar *reply,
diff --git a/src/tests/test-modem-helpers.c b/src/tests/test-modem-helpers.c
index b59c5900..d6984d2d 100644
--- a/src/tests/test-modem-helpers.c
+++ b/src/tests/test-modem-helpers.c
@@ -1867,6 +1867,70 @@ test_devid_item (void *f, gpointer d)
}
/*****************************************************************************/
+/* Test CMER test responses */
+
+static void
+test_cmer_response (const gchar *str,
+ MM3gppCmerMode expected_modes,
+ MM3gppCmerInd expected_inds)
+{
+ gboolean ret;
+ MM3gppCmerMode modes = MM_3GPP_CMER_MODE_NONE;
+ MM3gppCmerInd inds = MM_3GPP_CMER_IND_NONE;
+ GError *error = NULL;
+
+ ret = mm_3gpp_parse_cmer_test_response (str, &modes, &inds, &error);
+ g_assert_no_error (error);
+ g_assert (ret);
+
+ g_assert_cmpuint (modes, ==, expected_modes);
+ g_assert_cmpuint (inds, ==, expected_inds);
+}
+
+static void
+test_cmer_response_cinterion_pls8 (void)
+{
+ static const gchar *str = "+CMER: (0-3),(0),(0),(0-1),(0-1)";
+ static const MM3gppCmerMode expected_modes = ( \
+ MM_3GPP_CMER_MODE_DISCARD_URCS | \
+ MM_3GPP_CMER_MODE_DISCARD_URCS_IF_LINK_RESERVED | \
+ MM_3GPP_CMER_MODE_BUFFER_URCS_IF_LINK_RESERVED | \
+ MM_3GPP_CMER_MODE_FORWARD_URCS);
+ static const MM3gppCmerInd expected_inds = ( \
+ MM_3GPP_CMER_IND_DISABLE | \
+ MM_3GPP_CMER_IND_ENABLE_NOT_CAUSED_BY_CIND);
+
+ test_cmer_response (str, expected_modes, expected_inds);
+}
+
+static void
+test_cmer_response_sierra_em7345 (void)
+{
+ static const gchar *str = "+CMER: 1,0,0,(0-1),0";
+ static const MM3gppCmerMode expected_modes = ( \
+ MM_3GPP_CMER_MODE_DISCARD_URCS_IF_LINK_RESERVED);
+ static const MM3gppCmerInd expected_inds = ( \
+ MM_3GPP_CMER_IND_DISABLE | \
+ MM_3GPP_CMER_IND_ENABLE_NOT_CAUSED_BY_CIND);
+
+ test_cmer_response (str, expected_modes, expected_inds);
+}
+
+static void
+test_cmer_response_cinterion_ehs5 (void)
+{
+ static const gchar *str = "+CMER: (1,2),0,0,(0-1),0";
+ static const MM3gppCmerMode expected_modes = ( \
+ MM_3GPP_CMER_MODE_DISCARD_URCS_IF_LINK_RESERVED | \
+ MM_3GPP_CMER_MODE_BUFFER_URCS_IF_LINK_RESERVED);
+ static const MM3gppCmerInd expected_inds = ( \
+ MM_3GPP_CMER_IND_DISABLE | \
+ MM_3GPP_CMER_IND_ENABLE_NOT_CAUSED_BY_CIND);
+
+ test_cmer_response (str, expected_modes, expected_inds);
+}
+
+/*****************************************************************************/
/* Test CIND responses */
typedef struct {
@@ -3726,6 +3790,10 @@ int main (int argc, char **argv)
g_test_suite_add (suite, TESTCASE (test_cscs_buslink_support_response, NULL));
g_test_suite_add (suite, TESTCASE (test_cscs_blackberry_support_response, NULL));
+ g_test_suite_add (suite, TESTCASE (test_cmer_response_cinterion_pls8, NULL));
+ g_test_suite_add (suite, TESTCASE (test_cmer_response_sierra_em7345, NULL));
+ g_test_suite_add (suite, TESTCASE (test_cmer_response_cinterion_ehs5, NULL));
+
g_test_suite_add (suite, TESTCASE (test_cind_response_linktop_lw273, NULL));
g_test_suite_add (suite, TESTCASE (test_cind_response_moto_v3m, NULL));
--
2.12.2
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