File content as of revision 11:aa9c3fdf2303:

// @autor: jeremie@wizzilab.com
// @date: 2017-05-02

#include "DebouncedInterrupt.h"
#include "modem_ref_helper.h"
#include "modem_callbacks.h"

Semaphore button_user(0);
Semaphore modem_ready[MAX_USER_NB];

enum {
    MODEM_RESP_NO,
    MODEM_RESP_TERMINAL,
    MODEM_RESP_DONE,
};

uint8_t g_main_id;
uint8_t g_void_id;

typedef struct {
    Thread* thread;
    uint32_t count;
    d7a_addressee_t addressee;
} ping_t;

#define FID_PING_PONG           128
#define PING_DELAY              1000
#define PING_COUNTER_SIZE       sizeof(uint32_t)
#define MAX_PING_NB             MAX_USER_NB-2

// Special access classes for tests: no duty cycle limit, continuous scan
// { .bf.s = 12, .bf.m = 1 }; --> High Rate
// { .bf.s = 13, .bf.m = 1 }; --> Normal Rate
// { .bf.s = 14, .bf.m = 1 }; --> Slow Rate

// Use Gateway access profile and its 2 subprofiles at the same time
// Subprofile 0: 3 channels
// Subprofile 1: 4 channels
d7a_xcl_t ping_pong_xcl = { .bf.s = 2, .bf.m = 0x1 };

// This describe the interface used for communication
// Do not modify uncommented parameters
alp_d7a_itf_t my_itf = {
    .type                           = ALP_ITF_TYPE_D7A,
    .cfg.to                         = 0,
    .cfg.te                         = 0,
    .cfg.qos.bf.resp                = D7A_RESP_NO, // Communication protocol
    .cfg.qos.bf.retry               = ALP_RPOL_ONESHOT, // Retry policy 
    .cfg.addressee.ctrl.bf.nls      = D7A_NLS_AES_CCM_64, // Security level
    .cfg.addressee.xcl              = ping_pong_xcl, // Used Access Class
    // One of the followings:
    .cfg.addressee.ctrl.bf.idf      = D7A_ID_NOID, // in Broadcast (same as D7A_ID_NBID with .cfg.addressee.id[0] = D7A_CTF_VAL(2,2) (32))
 
    //.cfg.addressee.ctrl.bf.idf      = D7A_ID_UID, // in Unicast
    //.cfg.addressee.id               = { 0x00, 0x1B, 0xC5, 0x0C, 0x70, 0x00, 0x00, 0x00 }, // Destination UID

    //.cfg.addressee.ctrl.bf.idf      = D7A_ID_NBID, // in Broadcast
    //.cfg.addressee.id[0]            = D7A_CTF_ENCODE(4), // Estimation of expected responses (1 to 32)
};

// Callback for User
void my_main_callback(uint8_t terminal, int8_t err, uint8_t id)
{
    (void)id;
    
    if (ALP_ERR_NONE != err)
    {
        modem_print_error(ALP_ITF_TYPE_D7A, err);
    }
    
    if (terminal)
    {    
        modem_ready[id].release();
    }
}

void my_void_callback(uint8_t terminal, int8_t err, uint8_t id)
{
    (void)terminal;
    (void)id;
    
    if (ALP_ERR_NONE != err)
    {
        modem_print_error(ALP_ITF_TYPE_D7A, err);
    }
}

// Interrupt Service Routine on button press.
void button_push_isr( void )
{
    button_user.release();
}

#ifdef DEBUG_LED
DigitalOut my_led(DEBUG_LED);
#endif

void my_udata(void *data, u32 length)
{    
    uint8_t* p = (uint8_t*)data;
    int32_t rem = length;
    alp_parsed_chunk_t r;
    d7a_sp_res_t istat;
    
    do {
        uint32_t parsed = alp_parse_chunk(&p, &r);
        if (!parsed)
        {
            // Discard the payload in case of parsing error.
            PRINT("Parsing error!\r\n");
            break;
        }
        rem -= parsed;
        
        switch (r.type)
        {
            // Interface status
            case ALP_OPCODE_RSP_ISTATUS:
                // D7A Interface
                if (ALP_ITF_TYPE_D7A == r.meta.itf.type)
                {
                    // Save interface status
                    memcpy(&istat, r.data, sizeof(d7a_sp_res_t));
                }
                else
                {
                    PRINT("Got accessed by unknown Interface 0x%02X\n", r.meta.itf.type);
                }
                break;
            // Data return
            case ALP_OPCODE_RSP_F_DATA:
                if(FID_PING_PONG == r.meta.f_data.fid && 0 == r.meta.f_data.offset && PING_COUNTER_SIZE == r.meta.f_data.length)
                {
                    uint32_t count;

                    // Get data
                    memcpy(&count, r.data, r.meta.f_data.length);
                    
                    PRINT("Got  PING %d", count);
                    PRINT_DATA(" from ", "%02X", istat.addressee.id, 8, "");
                    PRINT(" (SNR:%d dB RXLEV:%d dBm LB:%d dB)\n", istat.snr, -istat.rxlev, istat.lb);
                    
#ifdef DEBUG_LED
                    my_led = 1;
#endif
                
                    ThisThread::sleep_for(PING_DELAY);
                    
#ifdef DEBUG_LED
                    my_led = 0;
#endif
                    
                    alp_d7a_itf_t resp_itf = {
                        .type                           = ALP_ITF_TYPE_D7A,
                        .cfg.to                         = 0,
                        .cfg.te                         = 0,
                        .cfg.qos.bf.resp                = D7A_RESP_NO,
                        .cfg.qos.bf.retry               = ALP_RPOL_ONESHOT,
                        .cfg.addressee                  = istat.addressee,
                    };
                    
                    count++;
                    
                    // Send ping
                    PRINT("Send PING %d", count);
                    PRINT_DATA(" to   ", "%02X", resp_itf.cfg.addressee.id, 8, "\n");
                    
                    modem_send_file_content((uint8_t*)&resp_itf, D7_ITF_SIZE(&resp_itf), NULL, FID_PING_PONG, &count, 0, PING_COUNTER_SIZE, g_void_id);
                }
                break;
            default:
                PRINT("Untreated OPCODE %d\n", r.type);
                break;
        }
    } while (rem > 0);
}


void button_user_thread()
{
    uint32_t ping = 0;
        
    FPRINT("(id:0x%08x)\r\n", osThreadGetId());
        
    while (true)
    {
        // Wait for button press
        PRINT("PRESS BUTTON TO INITIATE PING...\n");
        button_user.acquire();

        // Initiate ping
        PRINT("Initiate PING\n");
        modem_send_file_content((uint8_t*)&my_itf, D7_ITF_SIZE(&my_itf), NULL, FID_PING_PONG, &ping, 0, PING_COUNTER_SIZE, g_main_id);
        modem_ready[g_main_id].acquire();
    }
}

modem_callbacks_t callbacks = {
    .read       = my_read,
    .write      = my_write,
    .read_fprop = my_read_fprop,
    .flush      = my_flush,
    .remove     = my_delete,
    .udata      = my_udata,
    .lqual      = my_lqual,
    .ldown      = my_ldown,
    .reset      = my_reset,
    .boot       = my_boot,
    .busy       = my_busy,
};

/*** Main function ------------------------------------------------------------- ***/
int main()
{
    // Start & initialize
    #ifdef DEBUG_LED
    DBG_OPEN(DEBUG_LED);
#else
    DBG_OPEN(NC);
#endif
    PRINT("\n"
          "-----------------------------------------\n"
          "------------ Demo Ping Pong -------------\n"
          "-----------------------------------------\n");
          
    FPRINT("(id:0x%08x)\r\n", osThreadGetId());
    
    modem_helper_open(&callbacks);
    
    g_main_id = modem_get_id(my_main_callback);
    g_void_id = modem_get_id(my_void_callback);
    
    // Put modem to listen to this access class
    modem_write_file(D7A_FID_DLL_CFG, &ping_pong_xcl, 0, sizeof(d7a_xcl_t), g_main_id);
    modem_ready[g_main_id].acquire();
    
    PRINT("Start D7A Stack\n");
    modem_activate_itf(ALP_ITF_TYPE_D7A, 24, 0, ALP_D7A_ISTAT_RESP | ALP_D7A_ISTAT_UNS | ALP_D7A_ISTAT_EOP, true, g_main_id);
    modem_ready[g_main_id].acquire();
    
#ifdef DEBUG_BUTTON
    DebouncedInterrupt user_interrupt(DEBUG_BUTTON);
    user_interrupt.attach(button_push_isr, IRQ_FALL, 500, true);
    
    Thread but_th(osPriorityNormal, 1024, NULL);
    osStatus status = but_th.start(button_user_thread);
    ASSERT(status == osOK, "Failed to start but thread (err: %d)\r\n", status);
#endif
    
    // Set main task to lowest priority
    osThreadSetPriority(osThreadGetId(), osPriorityLow);
    while(true)
    {
        ThisThread::sleep_for(500);
    }
}