/*
This project is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Multiprotocol is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Multiprotocol. If not, see <http://www.gnu.org/licenses/>.
*/
#if defined(DEVO_CYRF6936_INO)
#include "iface_cyrf6936.h"
#define DEVO_NUM_CHANNELS 8
//For Debug
//#define NO_SCRAMBLE
#define DEVO_PKTS_PER_CHANNEL 4
#define DEVO_BIND_COUNT 0x1388
#define DEVO_NUM_WAIT_LOOPS (100 / 5) //each loop is ~5us. Do not wait more than 100us
enum {
DEVO_BIND,
DEVO_BIND_SENDCH,
DEVO_BOUND,
DEVO_BOUND_1,
DEVO_BOUND_2,
DEVO_BOUND_3,
DEVO_BOUND_4,
DEVO_BOUND_5,
DEVO_BOUND_6,
DEVO_BOUND_7,
DEVO_BOUND_8,
DEVO_BOUND_9,
DEVO_BOUND_10,
};
static void __attribute__((unused)) DEVO_scramble_pkt()
{
#ifdef NO_SCRAMBLE
return;
#else
for(uint8_t i = 0; i < 15; i++)
packet[i + 1] ^= cyrfmfg_id[i % 4];
#endif
}
static void __attribute__((unused)) DEVO_add_pkt_suffix()
{
uint8_t bind_state;
#ifdef ENABLE_PPM
if(mode_select && option==0 && IS_BIND_DONE) //PPM mode and option not already set and bind is finished
{
BIND_SET_INPUT;
BIND_SET_PULLUP; // set pullup
if(IS_BIND_BUTTON_on)
{
eeprom_write_byte((EE_ADDR)(MODELMODE_EEPROM_OFFSET+RX_num),0x01); // Set fixed id mode for the current model
option=1;
}
BIND_SET_OUTPUT;
}
#endif //ENABLE_PPM
if(prev_option!=option && IS_BIND_DONE)
{
MProtocol_id = RX_num + MProtocol_id_master;
bind_counter=DEVO_BIND_COUNT;
}
if (option)
{
if (bind_counter > 0)
bind_state = 0xc0;
else
bind_state = 0x80;
}
else
bind_state = 0x00;
packet[10] = bind_state | (DEVO_PKTS_PER_CHANNEL - packet_count - 1);
packet[11] = *(hopping_frequency_ptr + 1);
packet[12] = *(hopping_frequency_ptr + 2);
packet[13] = MProtocol_id & 0xff;
packet[14] = (MProtocol_id >> 8) & 0xff;
packet[15] = (MProtocol_id >> 16) & 0xff;
}
static void __attribute__((unused)) DEVO_build_beacon_pkt(uint8_t upper)
{
packet[0] = (DEVO_NUM_CHANNELS << 4) | 0x07;
uint8_t max = 8, offset = 0, enable = 0;
if (upper)
{
packet[0] += 1;
max = 4;
offset = 8;
}
for(uint8_t i = 0; i < max; i++)
{
#ifdef FAILSAFE_ENABLE
uint16_t failsafe=Failsafe_data[CH_EATR[i+offset]];
if(i + offset < DEVO_NUM_CHANNELS && failsafe!=FAILSAFE_CHANNEL_HOLD && IS_FAILSAFE_VALUES_on)
{
enable |= 0x80 >> i;
packet[i+1] = ((failsafe*25)>>8)-100;
}
else
#else
(void)offset;
#endif
packet[i+1] = 0;
}
packet[9] = enable;
DEVO_add_pkt_suffix();
}
static void __attribute__((unused)) DEVO_build_bind_pkt()
{
packet[0] = (DEVO_NUM_CHANNELS << 4) | 0x0a;
packet[1] = bind_counter & 0xff;
packet[2] = (bind_counter >> 8);
packet[3] = *hopping_frequency_ptr;
packet[4] = *(hopping_frequency_ptr + 1);
packet[5] = *(hopping_frequency_ptr + 2);
packet[6] = cyrfmfg_id[0];
packet[7] = cyrfmfg_id[1];
packet[8] = cyrfmfg_id[2];
packet[9] = cyrfmfg_id[3];
DEVO_add_pkt_suffix();
//The fixed-id portion is scrambled in the bind packet
//I assume it is ignored
packet[13] ^= cyrfmfg_id[0];
packet[14] ^= cyrfmfg_id[1];
packet[15] ^= cyrfmfg_id[2];
}
static void __attribute__((unused)) DEVO_build_data_pkt()
{
static uint8_t ch_idx=0;
packet[0] = (DEVO_NUM_CHANNELS << 4) | (0x0b + ch_idx);
uint8_t sign = 0x0b;
for (uint8_t i = 0; i < 4; i++)
{
int16_t value=convert_channel_16b_nolimit(CH_EATR[ch_idx * 4 + i],-1600,1600);//range -1600..+1600
if(value < 0)
{
value = -value;
sign |= 1 << (7 - i);
}
packet[2 * i + 1] = value & 0xff;
packet[2 * i + 2] = (value >> 8) & 0xff;
}
packet[9] = sign;
ch_idx++;
if (ch_idx * 4 >= DEVO_NUM_CHANNELS)
ch_idx = 0;
DEVO_add_pkt_suffix();
}
static void __attribute__((unused)) DEVO_cyrf_set_bound_sop_code()
{
/* crc == 0 isn't allowed, so use 1 if the math results in 0 */
uint8_t crc = (cyrfmfg_id[0] + (cyrfmfg_id[1] >> 6) + cyrfmfg_id[2]);
if(! crc)
crc = 1;
uint8_t sopidx = (0xff &((cyrfmfg_id[0] << 2) + cyrfmfg_id[1] + cyrfmfg_id[2])) % 10;
CYRF_SetTxRxMode(TX_EN);
CYRF_ConfigCRCSeed((crc << 8) + crc);
CYRF_PROGMEM_ConfigSOPCode(DEVO_j6pro_sopcodes[sopidx]);
CYRF_SetPower(0x08);
}
const uint8_t PROGMEM DEVO_init_vals[][2] = {
{ CYRF_1D_MODE_OVERRIDE, 0x38 },
{ CYRF_03_TX_CFG, 0x08 },
{ CYRF_06_RX_CFG, 0x4A },
{ CYRF_0B_PWR_CTRL, 0x00 },
{ CYRF_10_FRAMING_CFG, 0xA4 },
{ CYRF_11_DATA32_THOLD, 0x05 },
{ CYRF_12_DATA64_THOLD, 0x0E },
{ CYRF_1B_TX_OFFSET_LSB, 0x55 },
{ CYRF_1C_TX_OFFSET_MSB, 0x05 },
{ CYRF_32_AUTO_CAL_TIME, 0x3C },
{ CYRF_35_AUTOCAL_OFFSET, 0x14 },
{ CYRF_39_ANALOG_CTRL, 0x01 },
{ CYRF_1E_RX_OVERRIDE, 0x10 },
{ CYRF_1F_TX_OVERRIDE, 0x00 },
{ CYRF_01_TX_LENGTH, 0x10 },
{ CYRF_0F_XACT_CFG, 0x10 },
{ CYRF_27_CLK_OVERRIDE, 0x02 },
{ CYRF_28_CLK_EN, 0x02 },
{ CYRF_0F_XACT_CFG, 0x28 }
};
static void __attribute__((unused)) DEVO_cyrf_init()
{
/* Initialise CYRF chip */
for(uint8_t i = 0; i < sizeof(DEVO_init_vals) / 2; i++)
CYRF_WriteRegister(pgm_read_byte( &DEVO_init_vals[i][0]), pgm_read_byte( &DEVO_init_vals[i][1]) );
}
static void __attribute__((unused)) DEVO_set_radio_channels()
{
CYRF_FindBestChannels(hopping_frequency, 3, 4, 4, 80);
hopping_frequency[3] = hopping_frequency[0];
hopping_frequency[4] = hopping_frequency[1];
}
static void __attribute__((unused)) DEVO_BuildPacket()
{
static uint8_t failsafe_pkt=0;
switch(phase)
{
case DEVO_BIND:
if(bind_counter)
bind_counter--;
DEVO_build_bind_pkt();
phase = DEVO_BIND_SENDCH;
break;
case DEVO_BIND_SENDCH:
if(bind_counter)
bind_counter--;
DEVO_build_data_pkt();
DEVO_scramble_pkt();
if (bind_counter == 0)
{
phase = DEVO_BOUND;
BIND_DONE;
}
else
phase = DEVO_BIND;
break;
case DEVO_BOUND:
case DEVO_BOUND_1:
case DEVO_BOUND_2:
case DEVO_BOUND_3:
case DEVO_BOUND_4:
case DEVO_BOUND_5:
case DEVO_BOUND_6:
case DEVO_BOUND_7:
case DEVO_BOUND_8:
case DEVO_BOUND_9:
DEVO_build_data_pkt();
DEVO_scramble_pkt();
phase++;
if (bind_counter)
{
bind_counter--;
if (bind_counter == 0)
BIND_DONE;
}
break;
case DEVO_BOUND_10:
DEVO_build_beacon_pkt(DEVO_NUM_CHANNELS > 8 ? failsafe_pkt : 0);
failsafe_pkt = failsafe_pkt ? 0 : 1;
DEVO_scramble_pkt();
phase = DEVO_BOUND_1;
break;
}
packet_count++;
if(packet_count == DEVO_PKTS_PER_CHANNEL)
packet_count = 0;
}
uint16_t devo_callback()
{
static uint8_t txState=0;
if (txState == 0)
{
txState = 1;
DEVO_BuildPacket();
CYRF_WriteDataPacket(packet);
return 1200;
}
txState = 0;
uint8_t i = 0;
while (! (CYRF_ReadRegister(CYRF_04_TX_IRQ_STATUS) & 0x02))
if(++i > DEVO_NUM_WAIT_LOOPS)
return 1200;
if (phase == DEVO_BOUND)
{
/* exit binding state */
phase = DEVO_BOUND_3;
DEVO_cyrf_set_bound_sop_code();
}
if(packet_count == 0)
{
CYRF_SetPower(0x08); //Keep tx power updated
hopping_frequency_ptr = hopping_frequency_ptr == &hopping_frequency[2] ? hopping_frequency : hopping_frequency_ptr + 1;
CYRF_ConfigRFChannel(*hopping_frequency_ptr);
}
return 1200;
}
uint16_t DevoInit()
{
DEVO_cyrf_init();
CYRF_GetMfgData(cyrfmfg_id);
CYRF_SetTxRxMode(TX_EN);
CYRF_ConfigCRCSeed(0x0000);
CYRF_PROGMEM_ConfigSOPCode(DEVO_j6pro_sopcodes[0]);
DEVO_set_radio_channels();
hopping_frequency_ptr = hopping_frequency;
CYRF_ConfigRFChannel(*hopping_frequency_ptr);
packet_count = 0;
prev_option=option;
if(option==0)
{
MProtocol_id = ((uint32_t)(hopping_frequency[0] ^ cyrfmfg_id[0] ^ cyrfmfg_id[3]) << 16)
| ((uint32_t)(hopping_frequency[1] ^ cyrfmfg_id[1] ^ cyrfmfg_id[4]) << 8)
| ((uint32_t)(hopping_frequency[2] ^ cyrfmfg_id[2] ^ cyrfmfg_id[5]) << 0);
MProtocol_id %= 1000000;
bind_counter = DEVO_BIND_COUNT;
phase = DEVO_BIND;
BIND_IN_PROGRESS;
}
else
{
phase = DEVO_BOUND_1;
bind_counter = 0;
DEVO_cyrf_set_bound_sop_code();
}
return 2400;
}
#endif