AVR Update (must be declared as const error and others)

[joaquinperaza]

Solution:

Download attached ZIP with new library. ArduinoJWT.zip

Explanation: Edit ArduinoJWT and modify line 37:

const char* jwtHeader PROGMEM= "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9";

to:

const char* const jwtHeader PROGMEM= "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9";

Then in sha256.cpp you have to edit the original adding const to "unsigned char sha256InitState[] PROGMEM" and "uint32_t sha256K[] PROGMEM"

So ends like:

const uint32_t sha256K[] PROGMEM = { 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5, 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174, 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da, 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967, 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85, 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070, 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3, 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 };

#define BUFFER_SIZE 64

const unsigned char sha256InitState[] PROGMEM = { 0x67,0xe6,0x09,0x6a, // H0 0x85,0xae,0x67,0xbb, // H1 0x72,0xf3,0x6e,0x3c, // H2 0x3a,0xf5,0x4f,0xa5, // H3 0x7f,0x52,0x0e,0x51, // H4 0x8c,0x68,0x05,0x9b, // H5 0xab,0xd9,0x83,0x1f, // H6 0x19,0xcd,0xe0,0x5b // H7 };