From a00200af3c49818b50ea0ffea9c06a16569a1271 Mon Sep 17 00:00:00 2001
From: Edward Emelianov <eddy@sao.ru>
Date: Mon, 4 Jul 2022 14:48:59 +0300
Subject: [PATCH] fixed bta_meteo_modbus?

---
 BTA_modbusmeteo/bta_meteo_modbus.c | 7 ++++---
 BTA_modbusmeteo/main.c             | 1 +
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/BTA_modbusmeteo/bta_meteo_modbus.c b/BTA_modbusmeteo/bta_meteo_modbus.c
index 9f4bbdd..fb8a32c 100644
--- a/BTA_modbusmeteo/bta_meteo_modbus.c
+++ b/BTA_modbusmeteo/bta_meteo_modbus.c
@@ -155,8 +155,8 @@ params_ans check_meteo_params(){
     struct timeval timeout;
     fd_set set;
     time_t tstart = time(NULL);
-    int ctr = 15; // max 15 tries
-    while(ctr--) while(n_bytes){
+    int ctr = 50; // max 50 tries
+    while(ctr--){
         FD_ZERO(&set);
         FD_SET(portfd, &set);
         timeout.tv_sec = 0;
@@ -174,7 +174,8 @@ params_ans check_meteo_params(){
             size += n_bytes;
             if(n_bytes) continue;
         }
-        if(size > 0 && (res == 0 || size >= MODBUS_MAX_PACKET_SIZE || n_bytes == 0)) {
+        // read all or end of packet
+        if(size > 0 && res == 0 && (size == REQ_LEN || size == ANS_LEN)){
             if(crc_check(buffer, size)){
                 if(size == REQ_LEN){
                     lastpar = buffer[2] << 8 | buffer[3];
diff --git a/BTA_modbusmeteo/main.c b/BTA_modbusmeteo/main.c
index 0fcbf2b..a53788d 100644
--- a/BTA_modbusmeteo/main.c
+++ b/BTA_modbusmeteo/main.c
@@ -114,6 +114,7 @@ int main(int argc, char *argv[]){
             return 1;
         }
         params_ans a = check_meteo_params();
+        DBG("chk_meteo: %d", a);
         if(a == ANS_LOSTCONN){
             LOG("Lost connection with device, reconnect!");
             clear_flags();