Merge remote-tracking branch 'origin/sim7020_support'

Author: imliubo

README.md

@@ -69,7 +69,8 @@ TinyGSM also pulls data gently from the modem (whenever possible), so it can ope
 - SIMCom WCDMA/HSPA/HSPA+ Modules (SIM5360, SIM5320, SIM5300E, SIM5300E/A)
 - SIMCom LTE Modules (SIM7100E, SIM7500E, SIM7500A, SIM7600C, SIM7600E)
 - SIMCom SIM7000E/A/G CAT-M1/NB-IoT Module
-- SIMCom SIM7070/SIM7080/SIM7090 CAT-M1/NB-IoT Module
+- SIMCom SIM7020C/G NB-IoT Module
+- SIMCom SIM7028/SIM7070/SIM7080/SIM7090 CAT-M1/NB-IoT Module
 - SIMCom A7672X CAT-M1 Module
 - AI-Thinker A6, A6C, A7, A20
 - ESP8266/ESP32 (AT commands interface, similar to GSM modems)
@@ -96,6 +97,7 @@ TinyGSM also pulls data gently from the modem (whenever possible), so it can ope
 - RAK WisLTE ***(alpha)***
 - ... other modules, based on supported modems. Some boards require [**special configuration**](https://github.com/vshymanskyy/TinyGSM/wiki/Board-configuration).
 
+
 Watch this repo for new updates! And of course, contributions are welcome ;)
 
 ## Features

src/TinyGsmClient.h

@@ -31,6 +31,18 @@ typedef TinyGsmSim800::GsmClientSim800 TinyGsmClient;
 typedef TinyGsmSim7000                   TinyGsm;
 typedef TinyGsmSim7000::GsmClientSim7000 TinyGsmClient;
 
+#elif defined(TINY_GSM_MODEM_SIM7020)
+#include "TinyGsmClientSIM7020.h"
+typedef TinyGsmSim7020                   TinyGsm;
+typedef TinyGsmSim7020::GsmClientSim7020 TinyGsmClient;
+// typedef TinyGsmSim7020::GsmClientSecureSim7020 TinyGsmClientSecure; TODO!
+
+#elif defined(TINY_GSM_MODEM_SIM7028)
+#include "TinyGsmClientSIM7028.h"
+typedef TinyGsmSim7028                   TinyGsm;
+typedef TinyGsmSim7028::GsmClientSim7028 TinyGsmClient;
+// typedef TinyGsmSim7028::GsmClientSecureSim7028 TinyGsmClientSecure; TODO!
+
 #elif defined(TINY_GSM_MODEM_SIM7000SSL)
 #include "TinyGsmClientSIM7000SSL.h"
 typedef TinyGsmSim7000SSL                            TinyGsm;