int ZigBee_SetChannel(uint8_t ch)
{
if (ch > 102)
return -1;
ZigBee_WriteReg(REG_CC_CTRL_1, 5); //833Mhz + channel number
ZigBee_WriteReg(REG_CC_CTRL_0, ch);
return 0;
}
int ZigBee_ConfigClock()
{
int ret = 0;
//2mA all pins, CLKM disabled
ZigBee_WriteReg(REG_TRX_CTRL_0,0x00);
_delay_us(2);
// Internal crystal disabled, use external freq input
ZigBee_WriteReg(REG_XOSC_CTRL,0x40);
return ret;
}
/// makes one attempt to write a change to rx mode
/// return 0 on success, -1 on failure after 1 ms timeout
int ZigBee_SetModeRx() {
uint8_t zigbee_state = ZigBee_ReadState();
// wait until current state permits a transition
while(zigbee_state == STATUS_BUSY_RX || zigbee_state == STATUS_BUSY_TX || zigbee_state == STATUS_STATE_TRANSITION) {
DelayMicroseconds(100); // should not be required
zigbee_state = ZigBee_ReadState();
}
// if current state is already STATUS_RX_ON, return success
if(zigbee_state == STATUS_RX_ON) {
return(0); // success
}
// request transition
ZigBee_WriteReg(REG_TRX_STATE, CMD_RX_ON);
// poll state until transition verified
// datasheet reports nominal <170 us transition time
// timeout and fail after 1 ms
for(int i = 0; i < 100; i++) { // TODO: revisit timeout threshold
zigbee_state = ZigBee_ReadState();
if (zigbee_state == STATUS_RX_ON)
return(0); // success
}
// zigbee failed to reach state STATUS_RX_ON
return(-1); // failure
}
int ZigBee_SetModeRx()
{
uint8_t zigbee_state = ZigBee_ReadState();
while(zigbee_state == STATUS_BUSY_RX || zigbee_state == STATUS_BUSY_TX || zigbee_state == STATUS_STATE_TRANSITION)
{
zigbee_state = ZigBee_ReadState();
}
ZigBee_WriteReg(REG_TRX_STATE, CMD_RX_ON);
uint8_t state = 0;
for(int i = 0; i < 100; i++)
{
state = ZigBee_ReadState();
if (state == STATUS_RX_ON)
return(0);
}
return(-1);
}
int ZigBee_ForceTrxOff()
{
uint8_t zigbee_state = ZigBee_ReadState();
while(zigbee_state == STATUS_BUSY_RX || zigbee_state == STATUS_BUSY_TX || zigbee_state == STATUS_STATE_TRANSITION)
{
zigbee_state = ZigBee_ReadState();
}
//write FORCE_TRX_OFF to TRX_STATE
ZigBee_WriteReg(REG_TRX_STATE, CMD_FORCE_TRX_OFF);
uint8_t state = 0;
for(int i = 0; i < 300; i++)
{
state = ZigBee_ReadState();
if (state == STATUS_TRX_OFF)
return(0);
}
return(-1);
}
uint8_t ZigBee_WriteFrame(const void* data, uint8_t len)
{
if (len > MAX_ZIGBEE_PACKET_BYTES)
return -1;
SPI_TypeDef* SPI = MAKENAME(SPI,ZIGBEE_SPI);
const uint8_t *tx_ptr = data;
//clear any remaining bytes
while(SPI_I2S_GetFlagStatus(SPI, SPI_I2S_FLAG_RXNE))
SPI_ReceiveData8(SPI);
PullDown();
_delay_us(1);
//wait until TX buffer is empty
while(!SPI_I2S_GetFlagStatus(SPI, SPI_I2S_FLAG_TXE));
SPI_SendData8(SPI, 0x60);
while(!SPI_I2S_GetFlagStatus(SPI, SPI_I2S_FLAG_RXNE));
SPI_ReceiveData8(SPI);
SPI_SendData8(SPI, len+2); //two extra bytes for the 16-bit CRC
while(!SPI_I2S_GetFlagStatus(SPI, SPI_I2S_FLAG_RXNE));
SPI_ReceiveData8(SPI);
for(int ii = 0; ii < len; ii++)
{
SPI_SendData8(SPI, tx_ptr[ii]);
while(!SPI_I2S_GetFlagStatus(SPI, SPI_I2S_FLAG_RXNE));
SPI_ReceiveData8(SPI);
}
_delay_us(1);
PullUp();
ZigBee_WriteReg(REG_TRX_STATE, 0x02); //alternate method for signaling to send
return 0;
}
int ZigBee_PllOn()
{
uint8_t zigbee_state = ZigBee_ReadState();
while(zigbee_state == STATUS_BUSY_RX || zigbee_state == STATUS_BUSY_TX || zigbee_state == STATUS_STATE_TRANSITION)
{
zigbee_state = ZigBee_ReadState();
}
#if defined(DEBUG)
printf("zigbee setting PLL ON\r\n");
#endif
ZigBee_WriteReg(REG_TRX_STATE, CMD_PLL_ON);
uint8_t state = 0;
for(int i = 0; i < 100; i++)
{
state = ZigBee_ReadState();
if (state == STATUS_PLL_ON)
return(0);
}
return(-1);
}
void ZigBee_StartEdMeasurement()
{
ZigBee_WriteReg(REG_PHY_ED_LEVEL, 0xFF);
}
int ZigBee_Init()
{
if ( ZigBee_CheckPartAndVers() == 0 )
{
#if defined(DEBUG)
printf("zigbee found!\r\n");
#endif
}
else
{
#if defined(DEBUG)
printf("zigbee NOT found!!\r\n");
#endif
return -1;
}
ZigBee_ConfigClock();
_delay_us(10);
if (ZigBee_ForceTrxOff() != 0)
return -1;
//enable Auto CRC, disable RX buffer empty IRQ
ZigBee_WriteReg(REG_TRX_CTRL_1, 0x20);
_delay_us(2);
ZigBee_WriteReg(REG_TRX_CTRL_2, 0x2C); //modulation: OQPSK-SIN-250
_delay_us(2);
ZigBee_WriteReg(REG_PHY_TX_PWR, 0xE1); //output power setting to 10dBm
if (ZigBee_SetModeRx() == 0)
{
#if defined(DEBUG)
printf("zigbee initialization complete.\r\n");
#endif
}
else
{
#if defined(DEBUG)
printf("zigbee initialization FAILED.\r\n");
#endif
/* while(1)
{
uint8_t zigbee_ret = ZigBee_ReadState();
switch(zigbee_ret)
{
case STATUS_P_ON:
mRedTOGGLE; break;
case STATUS_BUSY_RX:
mWhiteTOGGLE; break;
case STATUS_BUSY_TX:
mGreenTOGGLE; break;
//case STATUS_RX_ON:
//mAmberTOGGLE; break;
case STATUS_TRX_OFF:
mRedTOGGLE; mWhiteTOGGLE; break;
case STATUS_PLL_ON:
mRedTOGGLE; mGreenTOGGLE; break;
case 0xF:
mRedTOGGLE; mAmberTOGGLE; break;
case 0x11:
mRedTOGGLE; mWhiteTOGGLE; mGreenTOGGLE; break;
case 0x12:
mRedTOGGLE; mWhiteTOGGLE; mAmberTOGGLE; break;
case 0x16:
mRedTOGGLE; mWhiteTOGGLE; mAmberTOGGLE; mGreenTOGGLE; break;
case 0x19:
mWhiteTOGGLE; mGreenTOGGLE; break;
case 0x1C:
mWhiteTOGGLE; mAmberTOGGLE; break;
case 0x1D:
mWhiteTOGGLE; mGreenTOGGLE; mAmberTOGGLE; break;
case 0x1E:
mGreenTOGGLE; mAmberTOGGLE; break;
case 0x1F:
mAmberTOGGLE; break;
int irq_ret = ZigBee_ReadIrq();
if((irq_ret & 0x40) != 0)
{
// Frame Buffer access violation
mRedON;
mWhiteON;
}
else if((irq_ret & 0x02) != 0)
{
// PLL unlock
mRedON;
mGreenON;
}
else if((irq_ret & 0x01) != 0)
{
// PLL lock
mGreenON;
mWhiteON;
}
}
_delay_ms(500);
} */
return -1;
}
return 0;
}
int ZigBee_EnableTrxEndIrq()
{
ZigBee_WriteReg(REG_IRQ_MASK,0b00001000);
return 0;
}
int ZigBee_Init()
{
if ( ZigBee_CheckPartAndVers() == 0 )
{
#if defined(DEBUG)
printf("zigbee found!\r\n");
#endif
}
else
{
#if defined(DEBUG)
printf("zigbee NOT found!!\r\n");
#endif
return -1;
}
ZigBee_ConfigClock();
DelayMicroseconds(10);
if (ZigBee_ForceTrxOff() != 0)
return -1;
//enable Auto CRC, disable RX buffer empty IRQ
// ZigBee_WriteReg(REG_TRX_CTRL_1, 0x20);
// _delay_us(2);
//enable Auto CRC, disable RX buffer empty IRQ, Enable Amplifier+LEDs
ZigBee_WriteReg(REG_TRX_CTRL_1, 0xE0);
DelayMicroseconds(2);
// see TRX_CTRL_2 register descriptions in datasheet
ZigBee_WriteReg(REG_TRX_CTRL_2, 0b00001100); // modulation: OQPSK-SIN-250, fairly reliable within Modlab
// ZigBee_WriteReg(REG_TRX_CTRL_2, 0b00001101); // modulation: OQPSK-SIN-500, fairly reliable within Modlab
// ZigBee_WriteReg(REG_TRX_CTRL_2, 0b00101110); // modulation: OQPSK-SIN-1000-SCR-ON, high data loss at any range
DelayMicroseconds(2);
#ifndef AMPLIFIED_OUTPUT
ZigBee_WriteReg(REG_PHY_TX_PWR, 0xE1); //output power setting to 10dBm
#else
ZigBee_WriteReg(REG_PHY_TX_PWR, 0x84); //output power setting to 5dBm (Amplified)
mOrangeOFF;
#endif
if (ZigBee_SetModeRx() == 0)
{
#if defined(DEBUG)
printf("zigbee initialization complete.\r\n");
#endif
}
else
{
#if defined(DEBUG)
printf("zigbee initialization FAILED.\r\n");
#endif
/* while(1)
{
uint8_t zigbee_ret = ZigBee_ReadState();
switch(zigbee_ret)
{
case STATUS_P_ON:
mRedTOGGLE; break;
case STATUS_BUSY_RX:
mWhiteTOGGLE; break;
case STATUS_BUSY_TX:
mGreenTOGGLE; break;
//case STATUS_RX_ON:
//mAmberTOGGLE; break;
case STATUS_TRX_OFF:
mRedTOGGLE; mWhiteTOGGLE; break;
case STATUS_PLL_ON:
mRedTOGGLE; mGreenTOGGLE; break;
case 0xF:
mRedTOGGLE; mAmberTOGGLE; break;
case 0x11:
mRedTOGGLE; mWhiteTOGGLE; mGreenTOGGLE; break;
case 0x12:
mRedTOGGLE; mWhiteTOGGLE; mAmberTOGGLE; break;
case 0x16:
mRedTOGGLE; mWhiteTOGGLE; mAmberTOGGLE; mGreenTOGGLE; break;
case 0x19:
mWhiteTOGGLE; mGreenTOGGLE; break;
case 0x1C:
mWhiteTOGGLE; mAmberTOGGLE; break;
case 0x1D:
mWhiteTOGGLE; mGreenTOGGLE; mAmberTOGGLE; break;
case 0x1E:
mGreenTOGGLE; mAmberTOGGLE; break;
case 0x1F:
mAmberTOGGLE; break;
int irq_ret = ZigBee_ReadIrq();
if((irq_ret & 0x40) != 0)
{
// Frame Buffer access violation
mRedON;
mWhiteON;
}
else if((irq_ret & 0x02) != 0)
{
// PLL unlock
mRedON;
mGreenON;
}
else if((irq_ret & 0x01) != 0)
{
// PLL lock
mGreenON;
mWhiteON;
}
}
DelayMilliseconds(500);
} */
return -1;
}
return 0;
}
