/* radio_test.c  D.J.Whale  03/04/2016
 *
 * A simple Energenie radio exerciser
 *
 * Repeatedly transmits OOK packets to turn switch 1 on and off.
 */

//TODO: When radio2.py is finished off (the ctypes wrapper)
//move this code up into radio_test.py
//For now, it's fine here.


/***** INCLUDES *****/

#include "system.h"
#include "radio.h"
#include "delay.h"
#include "trace.h"


/***** CONSTANTS *****/

/* How many times to repeat the OOK payload.
 * NOTE: At the moment this is limited to 16*8<256 in the HRF module
 * but that restriction will soon be removed.
 */

#define REPEATS 8


/* The 'radio' module knows nothing about the Energenie (HS1527) bit encoding,
 * so this test code manually encodes the bits.
 * For the full Python stack, there is an encoder module that can generate
 * specific payloads. Repeats are done in radio_transmitter.
 * The HRF preamble feature is no longer used, it's more predictable to
 * put the preamble in the payload.
 */

// preamble pulse with timing violation gap
#define PREAMBLE 0x80, 0x00, 0x00, 0x00

// Energenie 'random' 20 bit address is 0x6C6C6
// 0110 1100 0110 1100 0110
// 0 encoded as 8 (1000)
// 1 encoded as E (1110)
#define ADDR     0x8E, 0xE8, 0xEE, 0x88, 0x8E, 0xE8, 0xEE, 0x88, 0x8E, 0xE8

// Energenie 'switch 1 ON' command  F 1111  (0xEE, 0xEE)
#define SW1_ON  0xEE, 0xEE

// Energenie 'switch 1 OFF' command E 1110  (0xEE, 0xE8)
#define SW1_OFF 0xEE, 0xE8

/* manual preamble, 20 bit encoded address, 4 encoded data bits */
static uint8_t enc_1on[16]  = {PREAMBLE, ADDR, SW1_ON};
static uint8_t enc_1off[16] = {PREAMBLE, ADDR, SW1_OFF};



/***** FORWARD FUNCTION PROTOTYPES *****/

void radio_test_ook(void);
//void radio_test_fsk(void);


/*---------------------------------------------------------------------------*/

int main(int argc, char **argv)
{
    radio_test_ook();
    //TODO: radio_test_fsk();
}


/*---------------------------------------------------------------------------*/

void radio_test_ook(void)
{
    //gpio_init();
    //spi_init(&spi_config);

    radio_init();
    radio_modulation(RADIO_MODULATION_OOK);

    while (1)
    {
        /* Turn switch 1 on */
        TRACE_OUTS("Switch 1 ON\n");
        radio_send_payload(enc_1on, sizeof(enc_1on), REPEATS);
        radio_standby();
        delaysec(1);

        TRACE_OUTS("Switch 1 OFF\n");
        radio_send_payload(enc_1off, sizeof(enc_1off), REPEATS);
        radio_standby();
        delaysec(1);
    }

    radio_finished();
}


/*---------------------------------------------------------------------------*/

//void radio_test_fsk(void)
//{
//    //TODO
//}


/***** END OF FILE *****/