Atmel STK511 Operation & User’s Manual

i 4842B–AVR–10/09 Table of Contents Section 1 Overview ....................................................................................................................1-1 1.1 Features............................................................................................................................. 1-1 1.2 Introduction ........................................................................................................ ...

Table of Contents (Continued)

ii STK511 User Guide 4842B–AVR–10/09 4.2.3 Configuration Register LED Indicators ................................................................ 4-5 4.2.4 DATA Selector Switch ......................................................................................... 4-5 4.2.5 Configure Push Button ........................................................................................ 4-5 4.2.6 On-board Microcontroller.... ...

1-1 4842B–AVR–10/09 Section 1 Overview 1.1 Features � Plug-in Connectors Accept ATA5743/44/60/61 RF Receiver Application Board � DIP Switches Define Configuration Register Settings � LED Indicators Provide Programming Status of Configuration Register � Data Selector Switch Enables Fast Transition Between Operating Modes � Configuration Programming Button Simplifies Programming � Fully Compatible STK®500 Interface Connecto ...

4842B–AVR–10/09 Figure 1-1. STK511 Starter Kit Included in the Kit: � STK511 Receiver Interface Board � RF Receiver Application Board (one of the following) – ATA5760 (868 MHz) – ATA5761 (915 MHz) � RF Transmitter Application Board – Tiny13 + T5750 (868/915 MHz) � CD containing sample software � One CR2032 battery � External whip antenna (RX only, TX antenna is PCB trace) Optional items not included in t ...

2-1 4842B–AVR–10/09 Section 2 Getting Started The STK®511 Starter Kit comes complete with all the hardware needed to demonstrate a working RF system. Included are the STK511Interface Board, RF Receiver Application Board, and RF Transmitter Application Board. 2.1 Setting up the Hardware The Receiver Application Board should be oriented with its signal pins toward the DIP switches and LEDs on the STK511 Receiver Interface Board. This p ...

4842B–AVR–10/09 1. Once the hardware is setup, verify that the DATA selector switch is in the STK511 position. 2. Apply power, locate the DIP switch corresponding to the OPMODE register, and set the 5th DIP switch to the ON position. The LED enclosed in the silkscreen legend labeled Mod should light up, indicating a 1 (corresponding to ASK mode) was selected. 3. Press the Configure button to program the OPMODE and ...

2-3 4842B–AVR–10/09 2.3.2 STK511 Receiver Interface Board Configuration 1. Verify that the Receiver Application Board has been inserted into the appropriate sockets on the STK511 Receiver Interface Board. 2. Connect the STK511 Receiver Interface Board to the STK500 by aligning EXPAND0 and EXPAND1 connectors and pressing together. 3. Switch the Data Selector switch to the STK511 position. 4. Verify power is supplied to ...

3-1 4842B–AVR–10/09 Section 3 STK511 Receiver Board 3.1 Hardware Description 3.1.1 Overview The Atmel UHF receivers ATA5743, ATA5760, and ATA5761 are considered intelligent receivers. They demodulate and process the incoming ASK or FSK RF signal before providing a digital output to the user. These receivers are well suited for low cost, low data rate transmissions. For more detail about the receiver IC, refer to its respective datashe ...

3-2 STK511 User Guide 4842B–AVR–10/09 3.1.5 XTAL Oscillator The internal local oscillator (LO) for the receiver is determined by a scaled representation of the crystal frequency. The scale factor is different for each receiver. The ATA5743 receiver uses the crystal fre- quency times sixty-four to achieve the LO frequency. The ATA5760 and ATA5761 both use the crystal times 128 for the LO. This scaling factor must be taken into cons ...

STK511 User Guide 3-3 4842B–AVR–10/09 3.2 Software Description 3.2.1 Overview Decoding of the incoming digital signal from the receiver is performed by the AT90S8515 microcontroller onboard the STK500 in socket SCKT3000D3. The demodulated RF signal present on the receiver DATA line is routed to bit 4 of PortB. Also the D_CLK (Data Clock) line, provided by the RF receiver, is routed to bit 2 of PortB. For this demo, the RF signal i ...

3-4 STK511 User Guide 4842B–AVR–10/09 timeOut = 0; // Look for D_CLK to end pulse. if(flag1) { while(!flag2 && timeOut < timeOutVal) { // Check D_CLK. Exit when high if(PINB.2 == 1){flag2 = 1;} // Increment timeout else if(PINB.2 == 0){timeOut++;} } } // If D_CLK pulse was found continue to decode the incoming data if(flag2) { // Loop until all three bytes have been read in for(j = 0; j < 3; j++) { // Loop until eight bits of each ...

STK511 User Guide 3-5 4842B–AVR–10/09 { // Check D_CLK. Exit when high if(PINB.2 == 1) { flag2 = 1; //PORTD = 0xFF; //For Debug } // Increment timeout else if(PINB.2 == 0){timeOut++;} } } // Check level of DATA line. Load value into register if(PINB.4 == 1 && flag2) { // If DATA line high load a 0 // This will reverse the data and // Turn on the LED when a 1 was sent ReceiveData[j] &=(~(1<<(i-1))); } // Check level of DATA line. ...

3-6 STK511 User Guide 4842B–AVR–10/09 DisplayData = ReceiveData[1]; // Load data to be displayed delay_ms(40); // Wait DisplayLED(); // Write to LEDs } delay_ms(40);// Wait ResetRX(); // Set the Receiver back to polling } } ...

4-1 4842B–AVR–10/09 Section 4 STK511 Receiver Interface Board 4.1 Hardware Description Figure 4-1. STK511 Configuration Options Figure 4-2. STK511 Receiver Interface Board Figure 4-3. Receiver Application Board STK511 Receiver Interface Board (Figure 4-2) + Receiver Application Board (Figure 4-3) ↓ ↓ Stand-alone configuration (Figure 4-4 on page 4-2) STK500 Development Board (Figure 4-5 on page 4-2) ↓ STK500/511 Assembly (Figure ...

4-2 STK511 User Guide 4842B–AVR–10/09 Figure 4-4. Stand-alone Figure 4-5. STK500 Development Board Figure 4-6. STK500/511 Assembly 4.1.1 Standalone Configuration The STK511 Receiver Interface Board can be used in a standalone configuration along with one of Atmel’s Receiver Application Boards (see Figure 4-4). When the Receiver Application Board is com- bined with the Receiver Interface Board and connected to an extern ...

STK511 User Guide 4-3 4842B–AVR–10/09 4.1.2 STK500/511 Assembly Configuration When using the STK511 Receiver Interface Board as an expansion card for the STK500, (see Figure 4- 6 on page 4-2) the customer has the added capability of porting receiver signals directly into the STK500 development system. The receiver’s configuration registers still remain available for manual changes, but it is now possible to develop sof ...

4-4 STK511 User Guide 4842B–AVR–10/09 The following table shows how the signals from the receiver connectors (U2) are routed to the microcon- troller I/O ports. As shipped, the STK511 Receiver Interface Board routes the Receiver Application Board signals, necessary for stand-alone operation, to the on-board microcontroller. The remaining sig- nals are routed to the STK500 through the expansion connectors. See section “ ...

STK511 User Guide 4-5 4842B–AVR–10/09 4.2.3 Configuration Register LED Indicators Each configuration register bit has a corresponding LED on the STK511 Receiver Interface Board and is grouped according to specific functions. If an LED is ON the corresponding bit is set to logic 1. The LEDs are enclosed by the silkscreen legend and become part of the table for easy reference. 4.2.4 DATA Selector Switch The DATA selector s ...