void stkEvaluateRxMessage(void) /* not static to prevent inlining */
{
_u8 i, cmd;
utilWord_t len = {2}; /* defaults to cmd + error code */
void *param;
//
LED_RX_ON();
/*
NOTICE: Please do NOT forget to set the following values
txBuffer[STK_TXMSG_START] : cmd
&txBuffer[STK_TXMSG_START+1] : payload data
len.word : sizeof(cmd) + sizeof(payload data)
len.byte[0] : len.word & 0xFF
*/
cmd = rxBuffer[STK_TXMSG_START];
param = &rxBuffer[STK_TXMSG_START + 1];
// The default return value
txBuffer[STK_TXMSG_START] = cmd;
txBuffer[STK_TXMSG_START + 1] = STK_STATUS_CMD_OK;
// reduce the code size by removing the switch-case jump table
if (cmd == RPINFRA_STK_CMD_ECHO){
// simple echo back
}
else if (cmd == RPINFRA_STK_CMD_GET_ADC){
*(_u16 *)&txBuffer[STK_TXMSG_START+1] = analogRead(A_ADC0);
len.bytes[0] = sizeof(unsigned long) + 1;
}else if (cmd == RPINFRA_STK_CMD_SET_PWM){
PWM_ENABLE( IO_PWM0 );
PWM_SET( IO_PWM0, rxBuffer[STK_TXMSG_START + 1] );
}else if (cmd == SCANNER_CMD_SET_HEADING) {
// set heading
onSetHeading(*(_u16 *)&rxBuffer[STK_TXMSG_START + 1]);
}else if (cmd == SCANNER_CMD_ENABLE_LASER) {
onEnableLaser();
}else if (cmd == SCANNER_CMD_DISABLE_LASER) {
onDisableLaser();
}
LED_RX_OFF();
//
stkSetTxMessage(len.word);
}
void ST_RadioReceiveIsrCallback(u8 *packet,
boolean ackFramePendingSet,
u32 time,
u16 errors,
s8 rssi)
{
LED_RX_ON();
receiving_packet = 0;
/* Copy packet into the buffer. It is better to do this here. */
if(add_to_rxbuf(packet)){
process_poll(&stm32w_radio_process);
last_rssi = rssi;
}
LED_RX_OFF();
}
/*---------------------------------------------------------------------------*/
void
ST_RadioReceiveIsrCallback(uint8_t *packet,
boolean ackFramePendingSet,
uint32_t time, uint16_t errors, int8_t rssi)
{
LED_RX_ON();
PRINTF("stm32w: incomming packet received\n");
receiving_packet = 0;
/* Copy packet into the buffer. It is better to do this here. */
if(add_to_rxbuf(packet)) {
process_poll(&stm32w_radio_process);
last_rssi = rssi;
}
LED_RX_OFF();
GET_LOCK();
is_transmit_ack = 1;
/* Wait for sending ACK */
BUSYWAIT_UNTIL(!is_transmit_ack, RTIMER_SECOND / 1500);
RELEASE_LOCK();
}
void UserInit(void) {
byte i;
#if defined(USE_USB_BUS_SENSE_IO)
tris_usb_bus_sense = INPUT_PIN; // See io_cfg.h
#endif
#if defined(USE_SELF_POWER_SENSE_IO)
tris_self_power = INPUT_PIN;
#endif
CS_2515_HIGH(); //Drive high
tris_CS = 0; //Output
OpenSPI(SPI_FOSC_16, MODE_00, SMPMID);
TRISBbits.TRISB0 = 1; //SDI
TRISBbits.TRISB1 = 0; //SCK
//-------------------------
// initialize variables
//-------------------------
for (i = 0; i < BUF_SIZE; i++) // initialize input and output buffer to 0
{
inbuffer[i] = 0;
outbuffer[i] = 0;
}
//Timer 0
TMR0H = 0; //clear timer
TMR0L = 0; //clear timer
T0CONbits.PSA = 0; //Assign prescaler to Timer 0
T0CONbits.T0PS2 = 1; //Setup prescaler
T0CONbits.T0PS1 = 1; //Will time out every 51 us based on
T0CONbits.T0PS0 = 1; //20 MHz Fosc
T0CONbits.T0CS = 0; //Increment on instuction cycle
INTCON2 = 0xFF; //INT2 on rising edge
INTCON3bits.INT2IP = 0; //Low priority
INTCON3bits.INT2IF = 0; //Clear flag
INTCON3bits.INT2IE = 1; //Enable INT2 interrupt
//Outputs for the LEDs
ADCON1 = 0x0F; //Digital pins
CMCON = 0x07; //Digital pins
LED_25PCT_OFF();
LED_50PCT_OFF();
LED_75PCT_OFF();
LED_100PCT_OFF();
TRISBbits.TRISB6 = INPUT_PIN;
TRISBbits.TRISB7 = INPUT_PIN;
tris_LED_25PCT = OUTPUT_PIN;
tris_LED_50PCT = OUTPUT_PIN;
tris_LED_75PCT = OUTPUT_PIN;
tris_LED_100PCT = OUTPUT_PIN;
UserFlag.CANLoading = OFF;
LED_RX_OFF();
LED_TX_OFF();
tris_LED_TX = OUTPUT_PIN;
tris_LED_RX = OUTPUT_PIN;
tris_SW_LOAD = INPUT_PIN;
//RTS Pin Outputs
RTS0_2515_HIGH();
tris_RTS0_pin = OUTPUT_PIN;
RTS1_2515_HIGH();
tris_RTS1_pin = OUTPUT_PIN;
RTS2_2515_HIGH();
tris_RTS2_pin = OUTPUT_PIN;
tris_CAN_RES = OUTPUT_PIN;
CAN_RES_ON(); //JM
// CAN_RES_OFF(); //Disconnect the termination resistor by default
UserFlag.MCP_RXBn = 0; //clear flag
UserFlag.USBsend = 0; //clear flag
UserFlag.USBQueue = 0; //Clear message queue
//Need to set up MCP2515 before enabling interrupts
CANInit(); // See BusMon.c & .h
RCONbits.IPEN = 1;
INTCONbits.PEIE = 1;
INTCONbits.GIE = 1;
}//end UserInit
/******************************************************************************
* Function: void ProcessIO
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
* Side Effects: None
*
* Overview: This function is a place holder for other user routines.
* It is a mixture of both USB and non-USB tasks.
*
* Note: None
*****************************************************************************/
void ProcessIO(void) {
unsigned char n, b, c, y;
int a;
// User Application USB tasks
if (!(isUsbPowered)) //Only generate traffic if NOT connected to USB
{
CheckLoadButton();
CANLoadTX();
return;
}
if ((usb_device_state < CONFIGURED_STATE) || (UCONbits.SUSPND == 1)) return;
//----- Read USB buffer if it has data from the host -----
if (HIDRxReport(inbuffer, 64)) // USB receive buffer has data
{
LED_RX_ON(); //Turn LED on
T0CONbits.TMR0ON = 1; //Start timer for TX LED on time
gTimeout = 0; //Reset timout
//---- CANmsgs: Check if host has requested CAN messages to be transmited
switch (inbuffer[u_CANmsgs]) // interpret command
{
case 0x00: // No messages are available
break;
case 0x01: // Message 1 is available
GetUSBData(m1_SIDH, 13, DataArray);
n = SPILoadTX(CAN_LOAD_TX, 13, DataArray);
if (n == CAN_LD_TXB0_ID) //if TX0 is loaded
{
RTS0_2515_LOW();
RTS0_2515_HIGH();
} else if (n == CAN_LD_TXB1_ID) //if TX1 is loaded
{
RTS1_2515_LOW();
RTS1_2515_HIGH();
} else if (n == CAN_LD_TXB2_ID) //if TX2 is loaded
{
RTS2_2515_LOW();
RTS2_2515_HIGH();
}
break;
case 0x02: // Message 1 and 2 are available
//Message 1
GetUSBData(m1_SIDH, m1_DLC + 5, DataArray);
n = SPILoadTX(CAN_LOAD_TX, m1_DLC + 5, DataArray);
if (n == CAN_LD_TXB0_ID) //if TX0 is loaded
{
RTS0_2515_LOW();
RTS0_2515_HIGH();
} else if (n == CAN_LD_TXB1_ID) //if TX1 is loaded
{
RTS1_2515_LOW();
RTS1_2515_HIGH();
} else if (n == CAN_LD_TXB2_ID) //if TX2 is loaded
{
RTS2_2515_LOW();
RTS2_2515_HIGH();
}
//Message 2
GetUSBData(m2_SIDH, m2_DLC + 5, DataArray);
n = SPILoadTX(CAN_LOAD_TX, m2_DLC + 5, DataArray);
if (n == CAN_LD_TXB0_ID) //if TX0 is loaded
{
RTS0_2515_LOW();
RTS0_2515_HIGH();
} else if (n == CAN_LD_TXB1_ID) //if TX1 is loaded
{
RTS1_2515_LOW();
RTS1_2515_HIGH();
} else if (n == CAN_LD_TXB2_ID) //if TX2 is loaded
{
RTS2_2515_LOW();
RTS2_2515_HIGH();
}
break;
case 0x03: // Message 1, 2, and 3 are available
//Message 1
GetUSBData(m1_SIDH, m1_DLC + 5, DataArray);
n = SPILoadTX(CAN_LOAD_TX, m1_DLC + 5, DataArray);
if (n == CAN_LD_TXB0_ID) //if TX0 is loaded
{
RTS0_2515_LOW();
RTS0_2515_HIGH();
} else if (n == CAN_LD_TXB1_ID) //if TX1 is loaded
{
RTS1_2515_LOW();
RTS1_2515_HIGH();
} else if (n == CAN_LD_TXB2_ID) //if TX2 is loaded
{
RTS2_2515_LOW();
RTS2_2515_HIGH();
}
//Message 2
GetUSBData(m2_SIDH, m2_DLC + 5, DataArray);
n = SPILoadTX(CAN_LOAD_TX, m2_DLC + 5, DataArray);
if (n == CAN_LD_TXB0_ID) //if TX0 is loaded
{
RTS0_2515_LOW();
RTS0_2515_HIGH();
} else if (n == CAN_LD_TXB1_ID) //if TX1 is loaded
{
RTS1_2515_LOW();
RTS1_2515_HIGH();
} else if (n == CAN_LD_TXB2_ID) //if TX2 is loaded
{
RTS2_2515_LOW();
RTS2_2515_HIGH();
}
//Message 3
GetUSBData(m3_SIDH, m3_DLC + 5, DataArray);
n = SPILoadTX(CAN_LOAD_TX, m3_DLC + 5, DataArray);
if (n == CAN_LD_TXB0_ID) //if TX0 is loaded
{
RTS0_2515_LOW();
RTS0_2515_HIGH();
} else if (n == CAN_LD_TXB1_ID) //if TX1 is loaded
{
RTS1_2515_LOW();
RTS1_2515_HIGH();
} else if (n == CAN_LD_TXB2_ID) //if TX2 is loaded
{
RTS2_2515_LOW();
RTS2_2515_HIGH();
}
break;
case 0x04: //--FUTURE-- Message 1, 2, 3, and 4 are available
break;
default: // unrecognized or null command
;
}// END switch: inbuffer[u_CANmsgs]
//---- CANCTRL: Write to the CANCTRL register if changed
if (inbuffer[u_CANCTRL] != old_CANCTRL) //If host sent new CANCTRL value
{
SPIByteWrite(CANCTRL, inbuffer[u_CANCTRL]); //Write to CANCTRL
EEPROMBYTEWrite(CANCTRL, inbuffer[u_CANCTRL]);
EEPROMCRCWrite(0, 128);
old_CANCTRL = inbuffer[u_CANCTRL]; //
outbuffer[u_CANSTAT] = SPIByteRead(CANSTAT);
while ((outbuffer[u_CANSTAT] & 0xE0) != (inbuffer[u_CANCTRL] & 0xE0))//if didn't change modes yet
{
outbuffer[u_CANSTAT] = SPIByteRead(CANSTAT);
}
UserFlag.USBsend = 1; //Set flag so will send USB message
}
//---- SPI: SPI command from host
if (inbuffer[u_SPI]) //If host sent SPI command (non-zero)
{
switch (inbuffer[u_SPI]) {
case CAN_RESET: //
SPIReset();
CANInit();
break;
case CAN_READ: //
if (!UserFlag.USBQueue) // If previous message is queued
{
outbuffer[u_SPI] = CAN_READ; //Send back to host
outbuffer[u_REG] = inbuffer[u_REG]; //Send back to host
outbuffer[u_DATA] = SPIByteRead(inbuffer[u_REG]); //Send back to host
}
UserFlag.USBsend = 1; //Set flag so will send USB message
UserFlag.USBQueue = 1; //Indicates msg is queued, but not sent
break;
case CAN_WRITE: //
//outbuffer[u_SPI] = 0; //Send back to host //JM
SPIByteWrite(inbuffer[u_REG], inbuffer[u_DATA]);
EEPROMBYTEWrite(inbuffer[u_REG], inbuffer[u_DATA]);
EEPROMCRCWrite(0, 128);
break;
case CAN_RTS: //
SPI_RTS(inbuffer[u_DATA]);
break;
case CAN_RD_STATUS: //
outbuffer[u_DATA] = SPIReadStatus();
UserFlag.USBsend = 1; //Set flag so will send USB message
break;
case FIRMWARE_VER_RD:
memmove(&outbuffer[u_STATUS], firmware_version, sizeof (firmware_version));
outbuffer[u_STATUS + sizeof (firmware_version)] = 0;
UserFlag.USBsend = 1; //Set flag so will send USB message
break;
default: // unrecognized or null command
;
}// END switch: inbuffer[u_SPI]
}
}//END if (HIDRxReport(inbuffer, 1)
//---- Check RXnBF pins and service messages as needed ---
switch (CheckCANRX()) // Check if CAN message received
{
case 0x01: // Message in RXB0 (Msgs in this buffer are Standard)
SPIReadRX(CAN_RD_START_RXB0SIDH, 13, ReadArray);
LoadUSBString(ReadArray);
break;
case 0x02: // Message in RXB1 (Msgs in this buffer are Extended)
SPIReadRX(CAN_RD_START_RXB1SIDH, 13, ReadArray);
LoadUSBString(ReadArray);
break;
case 0x03: // Message in RXB0 and RXB1
SPIReadRX(CAN_RD_START_RXB0SIDH, 13, ReadArray);
LoadUSBString(ReadArray);
SPIReadRX(CAN_RD_START_RXB1SIDH, 13, ReadArray);
LoadUSBString(ReadArray);
break;
default: // unrecognized or null command
;
}// END switch: CheckCANRX()
//---- The following turns off the TX and RX USB indicator LEDs after some time
//Inst. cycle = 200 ns; TMR0IF sets every 51 us
if (INTCONbits.TMR0IF) {
TimerCounter++;
if (!TimerCounter) //if rolled over, set flag. User code will handle the rest.
{
LED_TX_OFF(); //Turn LED off
LED_RX_OFF(); //Turn LED off
T0CONbits.TMR0ON = 0; //Start timer for TX LED on time
TimerCounter = 0xFE;
gTimeout = 1; //Reset timout
}
INTCONbits.TMR0IF = 0;
}
//------ Load USB Data to be transmitted to the host --------
if (UserFlag.MCP_RXBn | UserFlag.USBsend) {
if (!mHIDTxIsBusy()) {
HIDTxReport(outbuffer, 64);
outbuffer[0] = 0x00; //PKR$$$ Need this??
UserFlag.MCP_RXBn = 0; //clear flag
UserFlag.USBsend = 0; //clear flag
UserFlag.USBQueue = 0; //Clear message queue
LED_TX_ON(); //Turn LED on
T0CONbits.TMR0ON = 1; //Start timer for TX LED on time
gTimeout = 0; //Reset timout
outbuffer[u_SPI] = 0x00; //clear back to 00h so host doesn't detect "SPI response"
USB_ptr = 0xFF; //Point to location 0xFF
outbuffer[u_CANmsgs] = 0x00; //Clear message status
}
}
}//end ProcessIO
