Read RTL8720 firmware version from application code

[reivilo]

Unfortunately, rpc_system_version() fails with a fresh update to RPC firmware v2.1.0 and the following libraries.

• seeed-ambd-firmware v2.1.0
• Seeed_Arduino_rpcUnified v2.1.1
• Seeed_Arduino_rpcWiFi v1.0.2
• Seeed_Arduino_mbedtls v2.0.1-dev branch
• Seeed_Arduino_FS v2.0.2
• Seeed_Arduino_SFUD v2.0.1

Similarly, WiFi fails to connect.

Sketch

#include <rpcWiFi.h>

void setup() {
  Serial.begin(115200);
  delay(2000);
  Serial.println("=== " __FILE__);
}

void loop() {
  Serial.print("rpc_system_version= ");
  String theVersion = rpc_system_version();
  Serial.println(theVersion);
  delay(1000);
}

Output

=== >/Users/USER/Documents/Projets/Arduino/Wio_rPC_Release/Wio_rPC_Release.ino
rpc_system_version=