From: Lars Poeschel
Currently AT+CGEREP=2,1 is sent in case we don't know what the modem
needs. (default case) Not all modems understand this. So, we first query
what the modem supports with AT+CGEREP=? and then use this information
to be nice to the modem. This way modems, like the Quectel M95 that do
only understand AT+CGEREP=1 do also work nicely.
---
Changes since v2:
- (min <= 1 <= max)
- error handling
drivers/atmodem/gprs.c | 64 --
1 file changed, 62 insertions(+), 2 deletions(-)
diff --git a/drivers/atmodem/gprs.c b/drivers/atmodem/gprs.c
index 68470f11..c208f6e6 100644
--- a/drivers/atmodem/gprs.c
+++ b/drivers/atmodem/gprs.c
@@ -45,6 +45,7 @@
#define MAX_CONTEXTS 255
static const char *cgreg_prefix[] = { "+CGREG:", NULL };
+static const char *cgerep_prefix[] = { "+CGEREP:", NULL };
static const char *cgdcont_prefix[] = { "+CGDCONT:", NULL };
static const char *cgact_prefix[] = { "+CGACT:", NULL };
static const char *none_prefix[] = { NULL };
@@ -648,6 +649,65 @@ static void gprs_initialized(gboolean ok, GAtResult
*result, gpointer user_data)
ofono_gprs_register(gprs);
}
+static void at_cgerep_test_cb(gboolean ok, GAtResult *result,
+ gpointer user_data)
+{
+ struct ofono_gprs *gprs = user_data;
+ struct gprs_data *gd = ofono_gprs_get_data(gprs);
+ GAtResultIter iter;
+ int min, max, arg1 = 0, arg2 = 0;
+ gboolean two_arguments = true;
+ char buf[20];
+
+ if (!ok) {
+ ofono_error("Error querying AT+CGEREP=? Failing...");
+ ofono_gprs_remove(gprs);
+ return;
+ }
+
+ g_at_result_iter_init(, result);
+
+ g_at_result_iter_next(, "+CGEREP:");
+
+ if (!g_at_result_iter_open_list()) {
+ ofono_error("Malformed reply from AT+CGEREP=? Failing...");
+ ofono_gprs_remove(gprs);
+ return;
+ }
+
+ while (g_at_result_iter_next_range(, , )) {
+ if ((min <= 1) && (max >= 1))
+ arg1 = 1;
+
+ if ((min <= 2) && (max >= 2))
+ arg1 = 2;
+ }
+
+ if (!g_at_result_iter_close_list())
+ goto out;
+
+ if (!g_at_result_iter_open_list()) {
+ two_arguments = false;
+ goto out;
+ }
+
+ while (g_at_result_iter_next_range(, , )) {
+ if ((min <= 1) && (max >= 1))
+ arg2 = 1;
+ }
+
+ g_at_result_iter_close_list();
+
+out:
+ if (two_arguments)
+ sprintf(buf, "AT+CGEREP=%u,%u", arg1, arg2);
+ else
+ sprintf(buf, "AT+CGEREP=%u", arg1);
+
+ g_at_chat_send(gd->chat, buf, none_prefix, gprs_initialized, gprs,
+ NULL);
+}
+
static void at_cgreg_test_cb(gboolean ok, GAtResult *result,
gpointer user_data)
{
@@ -702,8 +762,8 @@ retry:
gprs_initialized, gprs, NULL);
break;
default:
- g_at_chat_send(gd->chat, "AT+CGEREP=2,1", none_prefix,
- gprs_initialized, gprs, NULL);
+ g_at_chat_send(gd->chat, "AT+CGEREP=?", cgerep_prefix,
+ at_cgerep_test_cb, gprs, NULL);
break;
}
--
2.28.0
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