Gymtrack
interrupt handling
Diff: readerComm.cpp
- Revision:
- 13:16a5b43ac874
- Parent:
- 11:d5e8f47880f1
--- a/readerComm.cpp Fri Apr 10 23:16:44 2015 +0000
+++ b/readerComm.cpp Thu Apr 30 23:30:55 2015 +0000
@@ -6,12 +6,12 @@
Copyright (C) 2015 Gymtrack, Inc.
Author: Ron Clough
Date: 2015-02-27
-
+
Changes:
Rev Date Who Details
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0.0 2015-02-27 RWC Original version.
-
+
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*==========================================================================
Initialize the chipset ISO15693 and read UID:
@@ -20,16 +20,16 @@
2) Write Modulator and SYS_CLK Control Register (0x09) (13.56Mhz SYS_CLK and default Clock 13.56Mhz))
[0x09 0x31]
3) Configure Mode ISO Control Register (0x01) to 0x02 (ISO15693 high bit rate, one subcarrier, 1 out of 4)
-[0x01 0x02]
+[0x01 0x02]
4) Turn RF ON (Chip Status Control Register (0x00))
[0x40 r] [0x00 0x20] [0x40 r]
5) Inventory Command (see Figure 5-20. Inventory Command Sent From MCU to TRF7970A)
-5-1) Send Inventory(8B), Wait 2ms, Read/Clear IRQ Status(0x0C=>0x6C)+dummy read,
-Read FIFO Status Register(0x1C/0x5C), Read Continuous FIFO from 0x1F to 0x1F+0x0A(0x1F/0x7F),
-Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Read FIFO Status Register(0x1C/0x5C),
+5-1) Send Inventory(8B), Wait 2ms, Read/Clear IRQ Status(0x0C=>0x6C)+dummy read,
+Read FIFO Status Register(0x1C/0x5C), Read Continuous FIFO from 0x1F to 0x1F+0x0A(0x1F/0x7F),
+Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Read FIFO Status Register(0x1C/0x5C),
Reset FIFO(0x0F/0x8F), Read RSSI levels and oscillator status(0x0F/0x4F)
[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00] %:2 [0x6C r:2] [0x5C r] [0x7F r:10] %:10 [0x6C r:2] [0x5C r] [0x8F] [0x4F r]
-==============================================================================*/
+==============================================================================*/
@@ -39,23 +39,29 @@
#include "mbed.h"
#include "readerComm.h"
uint8_t sg=0;
-DigitalOut EN(p4); // Control EN pin on TRF7970
-DigitalOut EN2(p3); // Control EN2 pin on TRF7970
-DigitalOut CS(p19);
-uint8_t turnRFOn[2];
+DigitalOut EN(p0); // Control EN pin on TRF7970
+DigitalOut EN2(p4); // Control EN2 pin on TRF7970
+DigitalOut CS(p9);
+uint8_t turnRFOn[2];
uint8_t testcommand[2];
extern uint8_t noBytes;
extern SPI spi; // main.cpp
extern Serial pc; // main.cpp
uint8_t buf[300]; // main.cpp
uint8_t found=0;
+uint8_t rssi_flag=0;
+uint8_t rssi=0;
+extern DigitalOut BLED;
+DigitalOut AO_7970(p29);
+DigitalOut MOD_7970(p30);
+int nfc=0;
//extern bool tagFound=0;
-
-extern DigitalOut debug1LED;
-extern DigitalOut debug2LED;
-extern DigitalOut ISO15693LED;
-extern DigitalOut heartbeatLED;
-extern DigitalOut testPin;
+
+//extern DigitalOut debug1LED;
+//extern DigitalOut debug2LED;
+//extern DigitalOut ISO15693LED;
+//extern DigitalOut heartbeatLED;
+//extern DigitalOut testPin;
uint8_t temp;
uint8_t command[2];
@@ -84,7 +90,7 @@
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
{
uint8_t i=0;
-
+
CS = SELECT;
while(length > 0) {
*buffer = (0x1F & *buffer); // Register address
@@ -95,13 +101,13 @@
}
}
CS = DESELECT;
-
+
} // End of trf797xWriteSingle()
void trf797xReadSingle(uint8_t *buffer, uint8_t number)
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// trf797xReadSingle()
-// Description: Reads specified reader chip registers and
+// Description: Reads specified reader chip registers and
// writes register contents to *buffer.
// Parameters: *buffer = addresses of the registers.
// number = number of registers.
@@ -130,7 +136,8 @@
// Parameters: *buffer = address of first register.
// length = number of registers to read.
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
-{ //==================tested wrk $sg
+{
+ //==================tested wrk $sg
CS = SELECT;
*buffer = (0x60 | *buffer); // Address, read, continuous
*buffer = (0x7F & *buffer); // Register address
@@ -142,7 +149,7 @@
}
// spi.write(0x00); spi.write(0x00); // 16 clock cycles, see TRF7970A FW Design Hints SLOA159 section 7.3
CS = DESELECT;
-
+
//=====================tested it wrks $sg
} // End of trf797xReadContinuous()
@@ -183,12 +190,15 @@
void PowerUpNFC2(void)
-{//CS = 1;
+{
+ //CS = 1;
// wait_ms(4);
// EN = 1;
// EN2=1;
- CS = 0; EN2 = 0; EN = 0;
+ CS = 0;
+ EN2 = 0;
+ EN = 0;
wait_ms(2);
CS = 1;
wait_ms(3);
@@ -197,313 +207,374 @@
EN = 1;
}
void PowerUpNFC(void)
-{ //CS = 1;
+{
+ //CS = 1;
// wait_ms(4);
// EN = 1;
-EN2 = 1;
-wait_ms(1);
-EN=1;
+ EN2 = 1;
+ wait_ms(1);
+ EN=1;
}
void PowerDownNFC(void)
-{///CS=1;
- EN=0;
- EN2=0;
+{
+ ///CS=1;
+ EN=0;
+ EN2=0;
//wait_ms(1);
- //EN2= 0; PowerDown Mode
- //EN2=1; SleepMode
- //CS=0;
+//EN2= 0; PowerDown Mode
+//EN2=1; SleepMode
+//CS=0;
}
void SleepNFC(void)
-{ EN=0;
- EN2=0;
- }
+{
+ EN=0;
+ EN2=0;
+}
void StandByNFC(void)
{
turnRFOn[0] = CHIP_STATUS_CONTROL;
-turnRFOn[1] = CHIP_STATUS_CONTROL;
+ turnRFOn[1] = CHIP_STATUS_CONTROL;
-turnRFOn[1] &= 0x3F;
-turnRFOn[1] |= 0x80;
-trf797xWriteSingle(turnRFOn, 2);
+ turnRFOn[1] &= 0x3F;
+ turnRFOn[1] |= 0x80;
+ trf797xWriteSingle(turnRFOn, 2);
}
void SpiInit1(void)
{
-spi.format(8, 1); // 8 bit data, mode = 1 (transition on rising edge, sample on falling edge)
-spi.frequency(250000);
+ spi.format(8, 1); // 8 bit data, mode = 1 (transition on rising edge, sample on falling edge)
+ spi.frequency(250000);
}
void SpiInit(void)
{
-spi.format(8, 1); // 8 bit data, mode = 1 (transition on rising edge, sample on falling edge)
-spi.frequency(1000000);
+ spi.format(8, 1); // 8 bit data, mode = 1 (transition on rising edge, sample on falling edge)
+ spi.frequency(1000000);
}
void NFCInit(void)
-{testPin=1;
+{
+ //testPin=1;
//wait_ms(2);
-testcommand[0] = SOFT_INIT;
-trf797xDirectCommand(testcommand);
-wait_ms(2);
-testcommand[0] = IDLE;
-trf797xDirectCommand(testcommand);
-wait_ms(2);
-testcommand[0] = MODULATOR_CONTROL;
-testcommand[1] = 0x21; // 6.78 MHz, OOK 100%
-trf797xWriteSingle(testcommand, 2);
+
+ testcommand[0] = SOFT_INIT;
+ trf797xDirectCommand(testcommand);
+ wait_ms(2);
+ testcommand[0] = IDLE;
+ trf797xDirectCommand(testcommand);
+ wait_ms(2);
+//testcommand[0] =NFC_TARGET_LEVEL ;
+//testcommand[1] = 0x00;
+//trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = MODULATOR_CONTROL;
+ testcommand[1] = 0x81; // 6.78 MHz, OOK 100%
+ trf797xWriteSingle(testcommand, 2);
//wait_ms(2);
-testcommand[0] = MODULATOR_CONTROL;
-trf797xReadSingle(testcommand, 1);
-turnRFOn[0] = CHIP_STATUS_CONTROL;
-turnRFOn[1] = CHIP_STATUS_CONTROL;
-turnRFOn[1] &= 0x3F;
-turnRFOn[1] |= 0x20;
+ testcommand[0] = MODULATOR_CONTROL;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = REGULATOR_CONTROL ;
+ testcommand[1] = 0x07;
+ trf797xWriteSingle(testcommand, 2);
+ turnRFOn[0] = CHIP_STATUS_CONTROL;
+ turnRFOn[1] = CHIP_STATUS_CONTROL;
+ turnRFOn[1] &= 0x3F;
+ turnRFOn[1] |= 0x00;
// Oroiginal code has 0x20 !!!
-trf797xReadSingle(turnRFOn, 1);
-turnRFOn[0] = CHIP_STATUS_CONTROL;
-turnRFOn[1] = CHIP_STATUS_CONTROL;
-turnRFOn[1] &= 0x3F;
-turnRFOn[1] |= 0x20;
-trf797xWriteSingle(turnRFOn, 2);
+ trf797xReadSingle(turnRFOn, 1);
+ turnRFOn[0] = CHIP_STATUS_CONTROL;
+ turnRFOn[1] = CHIP_STATUS_CONTROL;
+ turnRFOn[1] &= 0x3F;
+ turnRFOn[1] |= 0x00;
+ trf797xWriteSingle(turnRFOn, 2);
//wait_ms(2);
-
-testcommand[0] = ISO_CONTROL;
-testcommand[1] = 0x02; // 6.78 MHz, OOK 100%
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = IRQ_MASK;
-testcommand[1] = 0x3F;
-trf797xWriteSingle(testcommand, 2);
-//wait_ms(6);
-testPin=0;}
+
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = ISO_CONTROL;
+ testcommand[1] = 0x02; // 6.78 MHz, OOK 100%
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = IRQ_MASK;
+ testcommand[1] = 0x3F;
+ trf797xWriteSingle(testcommand, 2);
+//wait_ms(6);
+//testPin=0;
+}
void RegisterReInitNFC(void)
-{testcommand[0] = TX_TIMER_EPC_HIGH;
-testcommand[1] = 0xC1;
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = TX_TIMER_EPC_LOW ;
-testcommand[1] = 0xC1;
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = TX_PULSE_LENGTH_CONTROL ;
-testcommand[1] = 0x00;
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = RX_NO_RESPONSE_WAIT_TIME ;
-testcommand[1] = 0x30;
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = RX_WAIT_TIME ;
-testcommand[1] = 0x1F;
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = MODULATOR_CONTROL ;
-testcommand[1] = 0x21; //0x34 100%ook@13MHz
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = RX_SPECIAL_SETTINGS ;
-testcommand[1] = 0x40;
-trf797xWriteSingle(testcommand, 2);
-testcommand[0] = REGULATOR_CONTROL ;
-testcommand[1] = 0x87;
-trf797xWriteSingle(testcommand, 2);
+{
+ //testcommand[0] =NFC_TARGET_LEVEL ;
+//testcommand[1] = 0x00;
+//trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = TX_TIMER_EPC_HIGH;
+ testcommand[1] = 0xC1;
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = TX_TIMER_EPC_LOW ;
+ testcommand[1] = 0xC1;
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = TX_PULSE_LENGTH_CONTROL ;
+ testcommand[1] = 0x00;
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = RX_NO_RESPONSE_WAIT_TIME ;
+ testcommand[1] = 0x30;
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = RX_WAIT_TIME ;
+ testcommand[1] = 0x1F;
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = MODULATOR_CONTROL ;
+ testcommand[1] = 0x81; //0x34 100%ook@13MHz
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = RX_SPECIAL_SETTINGS ;
+ testcommand[1] = 0x40;
+ trf797xWriteSingle(testcommand, 2);
+ testcommand[0] = REGULATOR_CONTROL ;
+ testcommand[1] = 0x07;
+ trf797xWriteSingle(testcommand, 2);
}
void RegistersReadNFC(void)
-{turnRFOn[0] = CHIP_STATUS_CONTROL;
-trf797xReadSingle(turnRFOn, 1);
-testcommand[0] = ISO_CONTROL;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = TX_TIMER_EPC_HIGH; //0xC1;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = TX_TIMER_EPC_LOW ; //0xC1;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = TX_PULSE_LENGTH_CONTROL ; //0x00;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = RX_NO_RESPONSE_WAIT_TIME ; //0x30;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = RX_WAIT_TIME ; //0x1F;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = MODULATOR_CONTROL ; //0x21;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = RX_SPECIAL_SETTINGS ; //0x40;
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = REGULATOR_CONTROL ; //0x87;
-trf797xReadSingle(testcommand, 1);
+{
+ turnRFOn[0] = CHIP_STATUS_CONTROL;
+ trf797xReadSingle(turnRFOn, 1);
+ testcommand[0] = ISO_CONTROL;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = TX_TIMER_EPC_HIGH; //0xC1;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = TX_TIMER_EPC_LOW ; //0xC1;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = TX_PULSE_LENGTH_CONTROL ; //0x00;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = RX_NO_RESPONSE_WAIT_TIME ; //0x30;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = RX_WAIT_TIME ; //0x1F;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = MODULATOR_CONTROL ; //0x21;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = RX_SPECIAL_SETTINGS ; //0x40;
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = REGULATOR_CONTROL ; //0x87;
+ trf797xReadSingle(testcommand, 1);
}
void InventoryReqNFC(void)
{
//send inventory command==================================================
-buf[0]=0x8F; //Send Inventory(8B)[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00]
-buf[1]=0x91;
-buf[2]=0x3D;
-buf[3]=0x00;
-buf[4]=0x30;
-buf[5]=0x26;
-buf[6]=0x01;
-buf[7]=0x00;
-trf797xRawWrite(&buf[0],8);
-//wait_ms(2);
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-wait_ms(5);
-/*====================================read tag ID
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-testcommand[0] = FIFO_COUNTER; //Read FIFO Status Register(0x1C/0x5C)
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = 0x7F & testcommand[0]; // Determine the number of bytes left in FIFO
-buf[0] = FIFO;
-trf797xReadContinuous(&buf[0], testcommand[0]);
-testcommand[0] = RSSI_LEVELS; //Read RSSI levels and oscillator status(0x0F/0x4F)
-trf797xReadSingle(testcommand, 1);
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-testcommand[0] = RESET; //Reset FIFO(0x0F/0x8F)
-trf797xDirectCommand(testcommand);
-trf797xStopDecoders();
-trf797xRunDecoders(); */
+ buf[0]=0x8F; //Send Inventory(8B)[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00]
+ buf[1]=0x91;
+ buf[2]=0x3D;
+ buf[3]=0x00;
+ buf[4]=0x30;
+ buf[5]=0x26;
+ buf[6]=0x01;
+ buf[7]=0x00;
+ trf797xRawWrite(&buf[0],8);
+//read rssi register and interchange rx input to main and aux receiver blocks
+//{add code block here
+// }
+ wait_ms(2);
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ wait_ms(5);
+//testcommand[0] = CHECK_EXTERNAL_RF;
+//trf797xDirectCommand(testcommand);
+//wait_ms(1);
+ testcommand[0] = RSSI_LEVELS; //Read RSSI levels and oscillator status(0x0F/0x4F)
+ trf797xReadSingle(testcommand, 1);
+ printf("RSSI:%X \r\n", testcommand[0]);
+ /*====================================read tag ID
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ testcommand[0] = FIFO_COUNTER; //Read FIFO Status Register(0x1C/0x5C)
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = 0x7F & testcommand[0]; // Determine the number of bytes left in FIFO
+ buf[0] = FIFO;
+ trf797xReadContinuous(&buf[0], testcommand[0]);
+ testcommand[0] = RSSI_LEVELS; //Read RSSI levels and oscillator status(0x0F/0x4F)
+ trf797xReadSingle(testcommand, 1);
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ testcommand[0] = RESET; //Reset FIFO(0x0F/0x8F)
+ trf797xDirectCommand(testcommand);
+ trf797xStopDecoders();
+ trf797xRunDecoders(); */
//=====================================read Tag ID
//wait(1);
}
void FindNFC(uint8_t *irqStatus)
-{//found=0;
+{
+ //found=0;
//static uint8_t sg;
-//printf("%X \r\n", *irqStatus);
-
- switch(*irqStatus)
- {case BIT0: found=BIT0; WAIT=10; break;
- case BIT1: found=BIT1; break;
- // case BIT2://found=BIT2; // break;
- //case BIT3:found=BIT3; WAIT=0;break;
+//printf("%X \r\n", *irqStatus);
+
+ switch(*irqStatus) {
+ case BIT0:
+ found=BIT0;
+ WAIT=10;
+ break;
+ case BIT1:
+ found=BIT1;
+ break;
+ // case BIT2://found=BIT2; // break;
+ //case BIT3:found=BIT3; WAIT=0;break;
// case BIT4:found=BIT4; WAIT=0;break;
// case BIT5:found=BIT5; WAIT=0;break;
- case 0x40: found=0x40; break;
- case BIT7: found=BIT7; break;
- default: found=0;
-}
+ case 0x40:
+ found=0x40;
+ break;
+ case BIT7:
+ found=BIT7;
+ break;
+ default:
+ found=0;
+ }
-}
+}
void handlerNFC(void)
{
-testcommand[0] = IRQ_STATUS;
-trf797xReadSingle(testcommand,1);
-FindNFC(testcommand);
+ testcommand[0] = IRQ_STATUS;
+ trf797xReadSingle(testcommand,1);
+ FindNFC(testcommand);
//wait_ms(1);
//=============================use if trf7970a irq_status is not cleared
-//testcommand[0] = IRQ_STATUS;
-//trf797xReadSingle(testcommand,1);
+//testcommand[0] = IRQ_STATUS;
+//trf797xReadSingle(testcommand,1);
//=============================
}
void MemReadReqNFC(void)
-{testcommand[0] = RX_NO_RESPONSE_WAIT_TIME ;
-testcommand[1] = 0xFF;
-trf797xWriteSingle(testcommand, 2);
- //send inventory command==================================================
-buf[0]=0x8F; //Send Inventory(8B)[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00]
-buf[1]=0x91;
-buf[2]=0x3D;
-buf[3]=0x00;
-buf[4]=0x30;
-buf[5]=0x02;
-buf[6]=0x20;
-buf[7]=0x00;
-trf797xRawWrite(&buf[0],8);
-//wait_ms(2);
+{
+ testcommand[0] = RX_NO_RESPONSE_WAIT_TIME ;
+ testcommand[1] = 0xFF;
+ trf797xWriteSingle(testcommand, 2);
+//send inventory command==================================================
+ buf[0]=0x8F; //Send Inventory(8B)[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00]
+ buf[1]=0x91;
+ buf[2]=0x3D;
+ buf[3]=0x00;
+ buf[4]=0x30;
+ buf[5]=0x02;
+ buf[6]=0x20;
+ buf[7]=0x00;
+ trf797xRawWrite(&buf[0],8);
+
+//read rssi register and interchange rx input to main and aux receiver blocks
+//{add code block here
+// }
+//wait_ms(2);
//testPin=1;
//=========================use to clear irq_status register of trf7970a
-//testcommand[0] = IRQ_STATUS;
-//trf797xReadSingle(testcommand,1);
-//testcommand[0] = IRQ_STATUS;
-//trf797xReadSingle(testcommand,1);
+//testcommand[0] = IRQ_STATUS;
+//trf797xReadSingle(testcommand,1);
+//testcommand[0] = IRQ_STATUS;
+//trf797xReadSingle(testcommand,1);
//==========================
-wait_ms(5);
+ wait_ms(5);
+//testcommand[0] = CHECK_EXTERNAL_RF;
+//trf797xDirectCommand(testcommand);
+//wait_us(100);
+ testcommand[0] = RSSI_LEVELS;
+ //Read RSSI levels and oscillator status(0x0F/0x4F)
+ trf797xReadSingle(testcommand, 1);
+ rssi=testcommand[0];
+
+ printf("RSSI:%X \r\n", testcommand[0]);
}
-void ReadNFC(void)
-{/*========================================== read irqstatus reg. of trf7970a
-//testcommand[0] = IRQ_STATUS; clear irqstatus reg of trf7970a
-//trf797xReadSingle(testcommand,1);
-//testcommand[0] = IRQ_STATUS;
-//trf797xReadSingle(testcommand,1);
-===========================================*/
+void ReadNFC(void)
+{
+ /*========================================== read irqstatus reg. of trf7970a
+ //testcommand[0] = IRQ_STATUS; clear irqstatus reg of trf7970a
+ //trf797xReadSingle(testcommand,1);
+ //testcommand[0] = IRQ_STATUS;
+ //trf797xReadSingle(testcommand,1);
+ ===========================================*/
-noBytes = FIFO_COUNTER; //Read FIFO Status Register(0x1C/0x5C)
-trf797xReadSingle(&noBytes, 1);
-noBytes = 0x7F & noBytes; // Determine the number of bytes left in FIFO
-buf[0] = FIFO;
-trf797xReadContinuous(&buf[0],noBytes);
+ noBytes = FIFO_COUNTER; //Read FIFO Status Register(0x1C/0x5C)
+ trf797xReadSingle(&noBytes, 1);
+ noBytes = 0x7F & noBytes; // Determine the number of bytes left in FIFO
+ buf[0] = FIFO;
+ trf797xReadContinuous(&buf[0],noBytes);
//==use if trf7970a irq_status is not cleared
-//testcommand[0] = IRQ_STATUS;
-//trf797xReadSingle(testcommand,1);
-//testcommand[0] = IRQ_STATUS;
-//trf797xReadSingle(testcommand,1);
+//testcommand[0] = IRQ_STATUS;
+//trf797xReadSingle(testcommand,1);
+//testcommand[0] = IRQ_STATUS;
+//trf797xReadSingle(testcommand,1);
//=========================================
-testcommand[0] = RESET; //Reset FIFO(0x0F/0x8F)
-trf797xDirectCommand(testcommand);
+ testcommand[0] = RESET; //Reset FIFO(0x0F/0x8F)
+ trf797xDirectCommand(testcommand);
-//wait(1);
+//wait(1);
}
-bool PollNFC(void)
-{
-CS=1;
-PowerUpNFC();
-//////wait_ms(1);
-NFCInit();
-RegisterReInitNFC();
-MemReadReqNFC(); //InventoryReqNFC()
+
+
+
+
+
+
+
-wait_ms(WAIT);
+bool PollNFC(void)
+{
+ printf("PollNFC \r\n");
+//CS=1;
+ // PowerUpNFC();
+//////wait_ms(1);
+ // NFCInit();
+ // RegisterReInitNFC();
+ MemReadReqNFC();
+ printf("back from MemReadReqNFC \r\n");
+ if (rssi>0x50)
+ {rssi_flag=1;}
+ else{rssi_flag=0;}
+ nfc++;
+//InventoryReqNFC();
+ wait_ms(WAIT);
-switch(found)
-{case BIT0:
- printf("no response:");
- printf("%X \r\n",found);
- found=0;
- WAIT=0;
- break;
+ switch(found) {
+ case BIT0:
+ printf("no response:");
+ printf("%X \r\n",found);
+ found=0;
+ WAIT=0;
+ break;
// //case BIT1:
// //case BIT2:
// //case BIT3:
//// case BIT4:
//// case BIT5:
- case BIT6:
- ReadNFC();
- PowerDownNFC(); //SleepNFC() //StandByNFC()
- found=1;
- WAIT=0;
- break;
- case BIT7:
- printf("tx complete:");
- printf("%X \r\n",found);
- found=0;
- WAIT=0;
-break;
-default: found=0;
-}
-//
-//
-////InventoryReqNFC();
-////if(found==1)
-////{
-////ReadNFC();
-////printf("tag id:");
-////for(uint8_t i=0; i<noBytes; i++)
-////printf("%X ", buf[i]);
-////printf("\r\n");
-////found=0;
-////}
-////else
-//{printf("tnf2 \r\n");
-//}
+ case BIT6:
+ ReadNFC();
+//PowerDownNFC(); //SleepNFC() //StandByNFC()
+ found=1;
+ WAIT=0;
+ break;
+ case BIT7:
+ printf("tx complete:");
+ printf("%X \r\n",found);
+ found=0;
+ WAIT=0;
+ break;
+ default:
+ if((nfc>10)&&(rssi_flag=1));
+ {rssi_flag=0;
+ nfc=0;
+ PowerUpNFC();
+ NFCInit();
+ RegisterReInitNFC();
+ printf("resetting 7970 \r\n:");
+ found=0;
+ }
+ }
-return found;
+ return found;
}
\ No newline at end of file