PER=((Total-Ack)/Total)*100%
где Total - общее количество пакетов, переданных передатчиком;
Ack - подтверждение, пришедшее от приемника.
Total-Ack - количество потерянных пакетов.
Затем данные будут выводится через RS232 на ноутбук. Но это позже. Для начала, хотелось бы завести сам тест.
Может кто-нибудь уже занимался этим? Хотелось бы увидеть примеры кода в IAR. Через некоторое время выложу свои попытки реализации.
Код для передатчика:
CODE
#include "RF_Toggle_LED_Demo.h"
#define PACKET_LEN (0x05) // PACKET_LEN <= 61
#define RSSI_IDX (PACKET_LEN) // Index of appended RSSI
#define CRC_LQI_IDX (PACKET_LEN+1) // Index of appended LQI, checksum
#define CRC_OK (BIT7) // CRC_OK bit
#define PATABLE_VAL (0x51) // 0 dBm output
extern RF_SETTINGS rfSettings;
unsigned char packetReceived;
unsigned char packetTransmit;
unsigned char RxBuffer[PACKET_LEN+2];
unsigned char RxBufferLength = 0;
const unsigned char TxBuffer[PACKET_LEN]= {0xAA, 0xBB, 0xCC, 0xDD, 0xEE};
unsigned char buttonPressed = 1;
unsigned int i = 0;
unsigned int Ack = 0;
unsigned int Total = 0;
unsigned char transmitting = 0;
unsigned char receiving = 0;
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
// Increase PMMCOREV level to 2 for proper radio operation
SetVCore(2);
ResetRadioCore();
InitRadio();
InitButtonLeds();
ReceiveOn();
receiving = 1;
while (1)
{
__bis_SR_register( LPM3_bits + GIE );
__no_operation();
if (buttonPressed) // Process a button press->transmit
{
P3OUT |= BIT6; // Pulse LED during Transmit
buttonPressed = 0;
P1IFG = 0;
ReceiveOff();
receiving = 0;
Transmit( (unsigned char*)TxBuffer, sizeof TxBuffer);
transmitting = 1;
P1IE |= BIT7; // Re-enable button press
}
else if(!transmitting)
{
ReceiveOn();
receiving = 1;
}
// Strobe( RF_SIDLE ); //перевод в режим ожидания
while (transmitting);
ReceiveOn(); //перевод в режим приема, для получения ответа
receiving = 1;
}
}
void InitButtonLeds(void)
{
// Set up the button as interruptible
P1DIR &= ~BIT7;
P1REN |= BIT7;
P1IES &= BIT7;
P1IFG = 0;
P1OUT |= BIT7;
P1IE |= BIT7;
// Initialize Port J
PJOUT = 0x00;
PJDIR = 0xFF;
// Set up LEDs
P1OUT &= ~BIT0;
P1DIR |= BIT0;
P3OUT &= ~BIT6;
P3DIR |= BIT6;
}
void InitRadio(void)
{
// Set the High-Power Mode Request Enable bit so LPM3 can be entered
// with active radio enabled
PMMCTL0_H = 0xA5;
PMMCTL0_L |= PMMHPMRE_L;
PMMCTL0_H = 0x00;
WriteRfSettings(&rfSettings);
WriteSinglePATable(PATABLE_VAL);
}
#pragma vector=PORT1_VECTOR
__interrupt void PORT1_ISR(void)
{
switch(__even_in_range(P1IV, 16))
{
case 0: break;
case 2: break; // P1.0 IFG
case 4: break; // P1.1 IFG
case 6: break; // P1.2 IFG
case 8: break; // P1.3 IFG
case 10: break; // P1.4 IFG
case 12: break; // P1.5 IFG
case 14: break; // P1.6 IFG
case 16: // P1.7 IFG
P1IE = 0; // Debounce by disabling buttons
buttonPressed = 1;
__bic_SR_register_on_exit(LPM3_bits); // Exit active
break;
}
}
void Transmit(unsigned char *buffer, unsigned char length)
{
RF1AIES |= BIT9;
RF1AIFG &= ~BIT9; // Clear pending interrupts
RF1AIE |= BIT9; // Enable TX end-of-packet interrupt
WriteBurstReg(RF_TXFIFOWR, buffer, length);
Strobe( RF_STX ); // Strobe STX
}
void ReceiveOn(void)
{
RF1AIES |= BIT9; // Falling edge of RFIFG9
RF1AIFG &= ~BIT9; // Clear a pending interrupt
RF1AIE |= BIT9; // Enable the interrupt
// Radio is in IDLE following a TX, so strobe SRX to enter Receive Mode
Strobe( RF_SRX );
}
void ReceiveOff(void)
{
RF1AIE &= ~BIT9; // Disable RX interrupts
RF1AIFG &= ~BIT9; // Clear pending IFG
// It is possible that ReceiveOff is called while radio is receiving a packet.
// Therefore, it is necessary to flush the RX FIFO after issuing IDLE strobe
// such that the RXFIFO is empty prior to receiving a packet.
Strobe( RF_SIDLE );
Strobe( RF_SFRX );
}
#pragma vector=CC1101_VECTOR
__interrupt void CC1101_ISR(void)
{
switch(__even_in_range(RF1AIV,32)) // Prioritizing Radio Core Interrupt
{
case 0: break; // No RF core interrupt pending
case 2: break; // RFIFG0
case 4: break; // RFIFG1
case 6: break; // RFIFG2
case 8: break; // RFIFG3
case 10: break; // RFIFG4
case 12: break; // RFIFG5
case 14: break; // RFIFG6
case 16: break; // RFIFG7
case 18: break; // RFIFG8
case 20: // RFIFG9
if(receiving) // RX end of packet
{
// Read the length byte from the FIFO
RxBufferLength = ReadSingleReg( RXBYTES );
ReadBurstReg(RF_RXFIFORD, RxBuffer, RxBufferLength);
// Stop here to see contents of RxBuffer
__no_operation();
// Check the CRC results
if(RxBuffer[CRC_LQI_IDX] & CRC_OK)
{
P1OUT ^= BIT0; // Toggle LED1
Ack++; //Количество подтверждений
}
}
else if(transmitting) // TX end of packet
{
RF1AIE &= ~BIT9; // Disable TX end-of-packet interrupt
P3OUT &= ~BIT6; // Turn off LED after Transmit
transmitting = 0;
Total++; //общее кол-во переданных пакетов
}
else while(1); // trap
break;
case 22: break; // RFIFG10
case 24: break; // RFIFG11
case 26: break; // RFIFG12
case 28: break; // RFIFG13
case 30: break; // RFIFG14
case 32: break; // RFIFG15
}
__bic_SR_register_on_exit(LPM3_bits);
}
#define PACKET_LEN (0x05) // PACKET_LEN <= 61
#define RSSI_IDX (PACKET_LEN) // Index of appended RSSI
#define CRC_LQI_IDX (PACKET_LEN+1) // Index of appended LQI, checksum
#define CRC_OK (BIT7) // CRC_OK bit
#define PATABLE_VAL (0x51) // 0 dBm output
extern RF_SETTINGS rfSettings;
unsigned char packetReceived;
unsigned char packetTransmit;
unsigned char RxBuffer[PACKET_LEN+2];
unsigned char RxBufferLength = 0;
const unsigned char TxBuffer[PACKET_LEN]= {0xAA, 0xBB, 0xCC, 0xDD, 0xEE};
unsigned char buttonPressed = 1;
unsigned int i = 0;
unsigned int Ack = 0;
unsigned int Total = 0;
unsigned char transmitting = 0;
unsigned char receiving = 0;
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
// Increase PMMCOREV level to 2 for proper radio operation
SetVCore(2);
ResetRadioCore();
InitRadio();
InitButtonLeds();
ReceiveOn();
receiving = 1;
while (1)
{
__bis_SR_register( LPM3_bits + GIE );
__no_operation();
if (buttonPressed) // Process a button press->transmit
{
P3OUT |= BIT6; // Pulse LED during Transmit
buttonPressed = 0;
P1IFG = 0;
ReceiveOff();
receiving = 0;
Transmit( (unsigned char*)TxBuffer, sizeof TxBuffer);
transmitting = 1;
P1IE |= BIT7; // Re-enable button press
}
else if(!transmitting)
{
ReceiveOn();
receiving = 1;
}
// Strobe( RF_SIDLE ); //перевод в режим ожидания
while (transmitting);
ReceiveOn(); //перевод в режим приема, для получения ответа
receiving = 1;
}
}
void InitButtonLeds(void)
{
// Set up the button as interruptible
P1DIR &= ~BIT7;
P1REN |= BIT7;
P1IES &= BIT7;
P1IFG = 0;
P1OUT |= BIT7;
P1IE |= BIT7;
// Initialize Port J
PJOUT = 0x00;
PJDIR = 0xFF;
// Set up LEDs
P1OUT &= ~BIT0;
P1DIR |= BIT0;
P3OUT &= ~BIT6;
P3DIR |= BIT6;
}
void InitRadio(void)
{
// Set the High-Power Mode Request Enable bit so LPM3 can be entered
// with active radio enabled
PMMCTL0_H = 0xA5;
PMMCTL0_L |= PMMHPMRE_L;
PMMCTL0_H = 0x00;
WriteRfSettings(&rfSettings);
WriteSinglePATable(PATABLE_VAL);
}
#pragma vector=PORT1_VECTOR
__interrupt void PORT1_ISR(void)
{
switch(__even_in_range(P1IV, 16))
{
case 0: break;
case 2: break; // P1.0 IFG
case 4: break; // P1.1 IFG
case 6: break; // P1.2 IFG
case 8: break; // P1.3 IFG
case 10: break; // P1.4 IFG
case 12: break; // P1.5 IFG
case 14: break; // P1.6 IFG
case 16: // P1.7 IFG
P1IE = 0; // Debounce by disabling buttons
buttonPressed = 1;
__bic_SR_register_on_exit(LPM3_bits); // Exit active
break;
}
}
void Transmit(unsigned char *buffer, unsigned char length)
{
RF1AIES |= BIT9;
RF1AIFG &= ~BIT9; // Clear pending interrupts
RF1AIE |= BIT9; // Enable TX end-of-packet interrupt
WriteBurstReg(RF_TXFIFOWR, buffer, length);
Strobe( RF_STX ); // Strobe STX
}
void ReceiveOn(void)
{
RF1AIES |= BIT9; // Falling edge of RFIFG9
RF1AIFG &= ~BIT9; // Clear a pending interrupt
RF1AIE |= BIT9; // Enable the interrupt
// Radio is in IDLE following a TX, so strobe SRX to enter Receive Mode
Strobe( RF_SRX );
}
void ReceiveOff(void)
{
RF1AIE &= ~BIT9; // Disable RX interrupts
RF1AIFG &= ~BIT9; // Clear pending IFG
// It is possible that ReceiveOff is called while radio is receiving a packet.
// Therefore, it is necessary to flush the RX FIFO after issuing IDLE strobe
// such that the RXFIFO is empty prior to receiving a packet.
Strobe( RF_SIDLE );
Strobe( RF_SFRX );
}
#pragma vector=CC1101_VECTOR
__interrupt void CC1101_ISR(void)
{
switch(__even_in_range(RF1AIV,32)) // Prioritizing Radio Core Interrupt
{
case 0: break; // No RF core interrupt pending
case 2: break; // RFIFG0
case 4: break; // RFIFG1
case 6: break; // RFIFG2
case 8: break; // RFIFG3
case 10: break; // RFIFG4
case 12: break; // RFIFG5
case 14: break; // RFIFG6
case 16: break; // RFIFG7
case 18: break; // RFIFG8
case 20: // RFIFG9
if(receiving) // RX end of packet
{
// Read the length byte from the FIFO
RxBufferLength = ReadSingleReg( RXBYTES );
ReadBurstReg(RF_RXFIFORD, RxBuffer, RxBufferLength);
// Stop here to see contents of RxBuffer
__no_operation();
// Check the CRC results
if(RxBuffer[CRC_LQI_IDX] & CRC_OK)
{
P1OUT ^= BIT0; // Toggle LED1
Ack++; //Количество подтверждений
}
}
else if(transmitting) // TX end of packet
{
RF1AIE &= ~BIT9; // Disable TX end-of-packet interrupt
P3OUT &= ~BIT6; // Turn off LED after Transmit
transmitting = 0;
Total++; //общее кол-во переданных пакетов
}
else while(1); // trap
break;
case 22: break; // RFIFG10
case 24: break; // RFIFG11
case 26: break; // RFIFG12
case 28: break; // RFIFG13
case 30: break; // RFIFG14
case 32: break; // RFIFG15
}
__bic_SR_register_on_exit(LPM3_bits);
}
Вот код для приемника:
CODE
#include "RF_Toggle_LED_Demo.h"
#define PACKET_LEN (0x05) // PACKET_LEN <= 61
#define RSSI_IDX (PACKET_LEN) // Index of appended RSSI
#define CRC_LQI_IDX (PACKET_LEN+1) // Index of appended LQI, checksum
#define CRC_OK (BIT7) // CRC_OK bit
#define PATABLE_VAL (0x51) // 0 dBm output
extern RF_SETTINGS rfSettings;
unsigned char packetReceived;
unsigned char packetTransmit;
unsigned char RxBuffer[PACKET_LEN+2];
unsigned char RxBufferLength = 0;
const unsigned char TxBuffer[PACKET_LEN]= {0xAA, 0xBB, 0xCC, 0xDD, 0xEE};
unsigned char buttonPressed = 1;
unsigned int i = 0;
unsigned char CRC = 0;
unsigned char transmitting = 0;
unsigned char receiving = 0;
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
// Increase PMMCOREV level to 2 for proper radio operation
SetVCore(2);
ResetRadioCore();
InitRadio();
InitButtonLeds();
ReceiveOn();
receiving = 1;
while (1)
{
__bis_SR_register( LPM3_bits + GIE );
__no_operation();
// if (CRC) // Если пакет принят и CRC совпадает запускаем передачу ответа
while (CRC)
{
P3OUT |= BIT6; // Pulse LED during Transmit
ReceiveOff();
receiving = 0;
Transmit( (unsigned char*)TxBuffer, sizeof TxBuffer);
transmitting = 1;
}
// else if(!transmitting)
// {
ReceiveOn();
receiving = 1;
//}
}
}
void InitButtonLeds(void)
{
// Set up the button as interruptible
P1DIR &= ~BIT7;
P1REN |= BIT7;
P1IES &= BIT7;
P1IFG = 0;
P1OUT |= BIT7;
P1IE |= BIT7;
// Initialize Port J
PJOUT = 0x00;
PJDIR = 0xFF;
// Set up LEDs
P1OUT &= ~BIT0;
P1DIR |= BIT0;
P3OUT &= ~BIT6;
P3DIR |= BIT6;
}
void InitRadio(void)
{
// Set the High-Power Mode Request Enable bit so LPM3 can be entered
// with active radio enabled
PMMCTL0_H = 0xA5;
PMMCTL0_L |= PMMHPMRE_L;
PMMCTL0_H = 0x00;
WriteRfSettings(&rfSettings);
WriteSinglePATable(PATABLE_VAL);
}
#pragma vector=PORT1_VECTOR
__interrupt void PORT1_ISR(void)
{
switch(__even_in_range(P1IV, 16))
{
case 0: break;
case 2: break; // P1.0 IFG
case 4: break; // P1.1 IFG
case 6: break; // P1.2 IFG
case 8: break; // P1.3 IFG
case 10: break; // P1.4 IFG
case 12: break; // P1.5 IFG
case 14: break; // P1.6 IFG
case 16: // P1.7 IFG
P1IE = 0; // Debounce by disabling buttons
buttonPressed = 1;
__bic_SR_register_on_exit(LPM3_bits); // Exit active
break;
}
}
void Transmit(unsigned char *buffer, unsigned char length)
{
RF1AIES |= BIT9;
RF1AIFG &= ~BIT9; // Clear pending interrupts
RF1AIE |= BIT9; // Enable TX end-of-packet interrupt
WriteBurstReg(RF_TXFIFOWR, buffer, length);
Strobe( RF_STX ); // Strobe STX
}
void ReceiveOn(void)
{
RF1AIES |= BIT9; // Falling edge of RFIFG9
RF1AIFG &= ~BIT9; // Clear a pending interrupt
RF1AIE |= BIT9; // Enable the interrupt
// Radio is in IDLE following a TX, so strobe SRX to enter Receive Mode
Strobe( RF_SRX );
}
void ReceiveOff(void)
{
RF1AIE &= ~BIT9; // Disable RX interrupts
RF1AIFG &= ~BIT9; // Clear pending IFG
// It is possible that ReceiveOff is called while radio is receiving a packet.
// Therefore, it is necessary to flush the RX FIFO after issuing IDLE strobe
// such that the RXFIFO is empty prior to receiving a packet.
Strobe( RF_SIDLE );
Strobe( RF_SFRX );
}
#pragma vector=CC1101_VECTOR
__interrupt void CC1101_ISR(void)
{
switch(__even_in_range(RF1AIV,32)) // Prioritizing Radio Core Interrupt
{
case 0: break; // No RF core interrupt pending
case 2: break; // RFIFG0
case 4: break; // RFIFG1
case 6: break; // RFIFG2
case 8: break; // RFIFG3
case 10: break; // RFIFG4
case 12: break; // RFIFG5
case 14: break; // RFIFG6
case 16: break; // RFIFG7
case 18: break; // RFIFG8
case 20: // RFIFG9
if(receiving) // RX end of packet
{
// Read the length byte from the FIFO
RxBufferLength = ReadSingleReg( RXBYTES );
ReadBurstReg(RF_RXFIFORD, RxBuffer, RxBufferLength);
// Stop here to see contents of RxBuffer
__no_operation();
// Check the CRC results
if(RxBuffer[CRC_LQI_IDX] & CRC_OK)
{P1OUT ^= BIT0; CRC = 1;} // Toggle LED1
}
else if(transmitting) // TX end of packet
{
RF1AIE &= ~BIT9; // Disable TX end-of-packet interrupt
P3OUT &= ~BIT6; // Turn off LED after Transmit
transmitting = 0;
}
else while(1); // trap
break;
case 22: break; // RFIFG10
case 24: break; // RFIFG11
case 26: break; // RFIFG12
case 28: break; // RFIFG13
case 30: break; // RFIFG14
case 32: break; // RFIFG15
}
__bic_SR_register_on_exit(LPM3_bits);
}
По идее, при нажатии кнопки на передатчике, на нем зажигается LED2, когда пакет передан, LED2 потухает. На приемнике переключается LED1 при приеме пакета. Затем применик передает ответный пакет и при этом на нем загорается LED2. А на передатчике при приеме ответа загорается LED1. При дебаге все работает как часы. Когда нормально их запускаю, то при нажатии кнопки на передатчике, на приемнике загораются оба светодиода и ничего не происходит. В чем может быть проблема?