misc/sysmobts_misc.c: Read temperature from microcontroller

Add function for requesting the temperature information to the
microcontroller. I have added a function that we can extend
for requesting more information but in this case we only need to
know the temperature.
I have added to a microcontroller temperature handling function
in the manager for monitoring this information.

Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>

1 files changed, 56 insertions, 0 deletions

diff --git a/src/osmo-bts-sysmo/misc/sysmobts_mgr.c b/src/osmo-bts-sysmo/misc/sysmobts_mgr.c
index 171f79b7..3a2c10c5 100644
--- a/src/osmo-bts-sysmo/misc/sysmobts_mgr.c
+++ b/src/osmo-bts-sysmo/misc/sysmobts_mgr.c
@@ -35,6 +35,7 @@
 #include <osmocom/core/application.h>
 #include <osmocom/core/timer.h>
 #include <osmocom/core/msgb.h>
+#include <osmocom/core/serial.h>
 #include <osmocom/vty/telnet_interface.h>
 #include <osmocom/vty/logging.h>
 
@@ -53,6 +54,58 @@ void *tall_mgr_ctx;
 /* every 1 hours means 365*24 = 8760 EEprom writes per year (max) */
 #define HOURS_TIMER_SECS	(1 * 3600)
 
+#ifdef BUILD_SBTS2050
+static struct osmo_timer_list temp_uc_timer;
+static void check_uctemp_timer_cb(void *data)
+{
+	int temp_pa = 0, temp_board = 0;
+	struct uc *ucontrol0 = data;
+
+	sbts2050_uc_check_temp(ucontrol0, &temp_pa, &temp_board);
+
+	osmo_timer_schedule(&temp_uc_timer, TEMP_TIMER_SECS, 0);
+}
+#endif
+
+static void initialize_sbts2050(void)
+{
+#ifdef BUILD_SBTS2050
+	static struct uc ucontrol0 = {
+		.id = 0,
+		.path = "/dev/ttyS0"
+	};
+	int val;
+
+	if (sysmobts_par_get_int(SYSMOBTS_PAR_MODEL_NR, &val) < 0) {
+		LOGP(DFIND, LOGL_ERROR,
+		     "Failed to get Model number\n");
+		return;
+	}
+
+	if (val == 2050) {
+		if (sysmobts_par_get_int(SYSMOBTS_PAR_TRX_NR, &val) < 0) {
+			LOGP(DFIND, LOGL_ERROR,
+			     "Failed to get the TRX number\n");
+			return;
+		}
+
+		if (val != 0)
+			return;
+	}
+
+	ucontrol0.fd = osmo_serial_init(ucontrol0.path, 115200);
+	if (ucontrol0.fd < 0) {
+		LOGP(DFIND, LOGL_ERROR,
+		     "Failed to open the serial interface\n");
+		return;
+	}
+
+	temp_uc_timer.cb = check_uctemp_timer_cb;
+	temp_uc_timer.data = &ucontrol0;
+	check_uctemp_timer_cb(&ucontrol0);
+#endif
+}
+
 static struct osmo_timer_list temp_timer;
 static void check_temp_timer_cb(void *unused)
 {
@@ -309,6 +362,9 @@ int main(int argc, char **argv)
 	hours_timer.cb = hours_timer_cb;
 	hours_timer_cb(NULL);
 
+	/* start uc temperature check timer */
+	initialize_sbts2050();
+
 	/* handle broadcast messages for ipaccess-find */
 	fd.cb = ipaccess_bcast;
 	rc = osmo_sock_init_ofd(&fd, AF_INET, SOCK_DGRAM, IPPROTO_UDP,