AN1924 Motorola / Freescale Semiconductor, AN1924 Datasheet
AN1924
Related parts for AN1924
AN1924 Summary of contents
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... DSP56824 featured in Application Note AN1921/D to the DSP56F805, using the Embedded SDK. The modifications are relatively minor and made only to the respective processor’s SDK-supported interface code. © Motorola, Inc., 2001 Order by AN1924/D (Motorola Order Number) Rev. 0, 4/2001 Contents 1. Introduction.....................................1 2. Interface Description.......................2 3 ...
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Interface Description 2. Interface Description Motorola’s DSP56F80x processors are DSP/MCU hybrids, which not only have the expected capabilities of a DSP, but also the features that allow the processor to perform the functions of a microprocessor. Additionally, the DSP56F80x family ...
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Figure 1. Motorola’s DSP56F805 EVM Board Figure 2. The J17 Header (SCI1 Port) on the DSP56F805 EVM Board 3. Descriptions of the Intelligent LCD Modules Specifications of the two intelligent serial LCD devices which will be interfaced to the DSP56F805’s ...
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Descriptions of the Intelligent LCD Modules 3.1 Crystalfontz’s 634 Intelligent Serial LCD Module This LCD module has attracted attention for its capability of interfacing as either an RS-232 device SPI device comes from the factory, ...
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Among the features of the LCD+ : • Serial I/O: RS-232 or Inverted TTL (2400 to 57600 Baud (8,N,1)) • Keypad input: 4x4 matrix type • Power requirements 15V DC at 9mA (200mA maximum with the backlight on) ...
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Interfacing the LCDs to the DSP56F805 Code Example 1. LCD634_sci_test.c // LCD634_sci_test.c program tests the interface between a DSP // 56805 using its SCI port and a LCD (Crystalfontz // 634 Intelligent serial display - March 1, 2001 ) #include ...
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Display some numbers on display */ nanosleep(&FiveSeconds, NULL); write( SciFD, NewScr for ( I=0; I < 29; I sprintf(astring, "%d " write (SciFD, astring, strlen(astring)); } nanosleep(&FiveSeconds, NULL); write( SciFD, NewScr ...
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Interfacing the LCDs to the DSP56F805 Code Example 2. LCDplus_sci_test.c // LCDplus_sci_test.c program tests the interface to a DSP56F805 SCI // serial port LCD (NewMedia’s Serial LCD+ ) and keypad #include "port.h" #include "io.h" #include "bsp.h" #include "fcntl.h" #include "sci.h" ...
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Display some numbers on display */ write( SciFD, NewScr strcpy( bstring, "Input at key (’0000’ to exit) \n"); write( SciFD, bstring , strlen(bstring)); strcpy( bstring, "Hit key to start"); ...
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Converting SDK-Based Code First, the SDK serial support native to the DSP56824 is not available or needed in the DSP56F805 environment. As shown previously, NetMedia’s LCD+ serial device and its associated keypad work very well with the DSP56F805’s SCI port. ...
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Code Example 5. Original SDK Code for DSP56824’s SPI0 Port SpiParams.bSetAsMaster = 1; /* Open SPI0 port */ SerialMaster = open( BSP_DEVICE_NAME_SPI_0, 0, &SpiParams ); . . . /* Set bit clock rate */ ioctl( SerialMaster, SPI_PHI_DIVIDER_32, NULL ); /* ...
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Converting SDK-Based Code #include "io.h" #include "fcntl.h" #include "bsp.h" #include "spi.h" #include "stdio.h" #include "sci.h" #include "string.h" #include "port.h" #include "timer.h" #include "types.h" #include "math.h" #include "lcd.h" #include "TLC2543.h" // Prototype of procedure void BaroAdj( int , Word32 * ); ...
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SciFD = open( BSP_DEVICE_NAME_SCI_1, 0, &SciConfig ); ioctl( SciFD, SCI_DATAFORMAT_EIGHTBITCHARS, NULL ); /* Set bit clock rate */ ioctl( SerialMaster, SPI_BAUDRATE_DIVIDER_32, NULL ); /* SS can be left low between successive SPI bytes */ ioctl( SerialMaster, SPI_CLOCK_PHASE_NOTSET, NULL); /* TLC2543 ...
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Converting SDK-Based Code /* process sleeps for 1 msec. */ nanosleep( &OneMillisecond, NULL ); DataStore[i] = Datain; sum += Datain; } Vcount = (sum >> 6); /* Compute Barometric pressure in millibars, the following expression uses 32-bit arithmetic and 10 ...
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CR[0] ) break (iarray[icount] >= ’0’) && (iarray[icount] < ’9’)) { write( SciFD, &iarray[icount icount++; } } iarray[icount sscanf(iarray, "%d", &temp ); *padj = (Word32)temp Conclusions This application ...
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NetMedia’s Serial LCD+ Appendix A. The Serial LCD 4x20 LCD display with a built-in bi-directional serial interface. The unit is controlled using standard RS-232 serial signals from a host computer or microcontroller. The LCD+ supports these serial data ...
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A.3 Power Input The power input section consists of four through holes (Solder pads). The two holes marked GND are grounds. The hole marked +5.5V to +15V is tied to the onboard regulator of the LCD+ module. The hole marked ...
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NetMedia’s Serial LCD+ Table A-2. LCD+ Keypad Options Table Mode Byte Name B3 “Mask Key Presses” B4 “Auto Backlight” B7 “Delayed Response” Control Code Function Ctrl-A Cursor Home Ctrl-B Set/Adjust Backlight Brightness Ctrl-C Set/Adjust Contrast Ctrl-D Hide Cursor Ctrl-E Underline ...
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Table A-3. LCD+ Control Codes Control Code Function Ctrl-U Set Baud Rate Ctrl-V Read ADC Inputs Ctrl-W Change Bell/Buzzer Frequency Ctrl-X Set Keypad Modes Ctrl-Y Read Keypad Input as Port Ctrl-Z Get LCD+ EEPROM Settings None Display Custom Character Interfacing ...
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... ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tao Po, N.T., Hong Kong. 852-26668334 Technical Information Center: 1-800-521-6274 HOME PAGE: http://motorola.com/semiconductors/dsp Ç are registered trademarks of Motorola, Inc. Motorola, Inc Equal MOTOROLA HOME PAGE: http://motorola.com/semiconductors/ AN1924/D ...