MMA8452加速度传感器测试代码

/***********************************************************************************************\ * Freescale MMA8451,2,3Q Driver * * Filename: terminal.c * * * (c) Copyright 2010, Freescale, Inc. All rights reserved. * * No part of this document must be reproduced in any form - including copied, * transcribed, printed or by any electronic means - without specific written * permission from Freescale Semiconductor. * \***********************************************************************************************/ #include "system.h" /***********************************************************************************************\ * Private macros \***********************************************************************************************/ /***********************************************************************************************\ * Private type definitions \***********************************************************************************************/ /***********************************************************************************************\ * Private prototypes \***********************************************************************************************/ byte ProcessHexInput (byte *in, byte *out); void CopyXYZ (byte *ptr); void CopyXYZ8 (byte *ptr); void PrintXYZdec14 (void); void PrintXYZdec12 (void); void PrintXYZdec10(void); void PrintXYZdec8 (void); void PrintXYZfrac (void); void ClearDataFlash (void); void PrintBuffering (void); void PrintFIFO (void); void ReadDataFlashXYZ (void); void WriteFlashBuffer (void); /***********************************************************************************************\ * Private memory declarations \***********************************************************************************************/ #pragma DATA_SEG __SHORT_SEG _DATA_ZEROPAGE BIT_FIELD StreamMode; // stream mode control flags extern BIT_FIELD RegisterFlag; extern byte value[]; // working value result scratchpad static byte temp; // byte variables static byte index; // input character string index static tword x_value; // 16-bit X accelerometer value static tword y_value; // 16-bit Y accelerometer value static tword z_value; // 16-bit Z accelerometer value extern byte SlaveAddressIIC; // accelerometer slave I2C address extern byte functional_block; // accelerometer function extern byte address_in[3]; // Data Flash input address pointer extern byte address_out[3]; // Data Flash output address pointer #pragma DATA_SEG DEFAULT extern tfifo_sample fifo_data[FIFO_BUFFER_SIZE]; // FIFO sample buffer byte *const ODRvalues [] = { "800", "400", "200", "100", "50", "12.5", "6.25", "1.563" }; byte *const HPvaluesN [] = { "16", "8", "4", "2", //800 "16", "8", "4", "2", //400 "8", "4", "2", "1", //200 "4", "2", "1", "0.5", //100 "2", "1", "0.5", "0.25", //50 "2", "1", "0.5", "0.25", //12.5 "2", "1", "0.5", "0.25", //6.25 "2", "1", "0.5", "0.25" }; byte *const HPvaluesLNLP [] = { "16", "8", "4", "2", "16", "8", "4", "2", "8", "4", "2", "1", "4", "2", "1", "0.5", "2", "1", "0.5", "0.25", "0.5", "0.25", "0.125", "0.063", "0.25", "0.125", "0.063", "0.031", "0.063", "0.031", "0.016", "0.008" }; byte *const HPvaluesHiRes [] = { "16", "8", "4", "2" }; byte *const HPvaluesLP [] = { "16", "8", "4", "2", "8", "4", "2", "1", "4", "2", "1", "0.5", "2", "1", "0.5", "0.25", "1", "0.5", "0.25", "0.125", "0.25", "0.125", "0.063", "0.031", "0.125", "0.063", "0.031", "0.016", "0.031", "0.016", "0.008", "0.004" }; byte *const GRange [] = { "2g", "4g", "8g" }; /***********************************************************************************************\ * Public functions \***********************************************************************************************/ /*********************************************************\ ** Terminal Strings \*********************************************************/ const byte string_Prompt [] = {"\r\nMMA845xQ> "}; const byte string_What [] = {" <-- what?"}; const byte string_Streaming [] = {" - Streaming XYZ data"}; const byte string_Counts [] = {" as signed counts\r\n"}; const byte string_Gs [] = {" as signed g's\r\n"}; const byte string_Interrupts [] = {" via Int Mode "}; const byte string_FIFO [] = {" via FIFO"}; /*********************************************************\ ** Initialize Terminal Interface \*********************************************************/ void TerminalInit (void) { SCISendString("\r\n\n** LONGQIU I.S.&T. **"); SCISendString ("\r\n** MMA845xQ Driver **"); SCISendString ("\r\n** using the MC9S08QE8 **"); SCISendString ("\r\n** **"); SCISendString ("\r\n** "__DATE__" "__TIME__" **\r\n\n"); /* ** Prepare Data Flash. */ DATAFLASH_Unprotect(); address_in[0] = 0; address_in[1] = 0; address_in[2] = 0; address_out[0] = 0; address_out[1] = 0; address_out[2] = 0; SPI_SS_SELECT; SPI_ChrShift(0x01); SPI_ChrShift(0x00); SPI_SS_DESELECT; functional_block = FBID_MAX; StreamMode.Byte = 0; } /*********************************************************\ ** Process Terminal Interface \*********************************************************/ void ProcessTerminal (void) { /* ** Output command prompt if required. */ if (PROMPT_WAIT == FALSE) { SCISendString((byte*)string_Prompt); PROMPT_WAIT = TRUE; } /* ** Get input from terminal. */ if (SCI_INPUT_READY == TRUE) { INPUT_ERROR = FALSE; /* ** Use command line input if not streaming data */ if ((XYZ_STREAM == FALSE) && (INT_STREAM == FALSE)) { PROMPT_WAIT = FALSE; /* ** Get first input character - only uppercase */ switch (BufferRx[0]) { /***************************************************************************************/ case '?': /* ** Help : list valid commands */ SCISendString("\r\nMn : Mode 1= Standby; 2= 2g; 4= 4g; 8= 8g\r\n"); SCISendString("On : Oversampling 0=Normal 1=LNLP 2=HiRes 3=LP\r\n"); SCISendString("ROn : ODRHz 0=800; 1=400; 2=200; 3=100; 4=50; 5=12.5; 6=6.25; 7=1.56\r\n"); SCISendString("RRxx : Register xx Read\r\n"); SCISendString("RWxx=nn : Register xx Write value nn\r\n"); SCISendString("RHn : High Pass Filter 0 - 3\r\n"); SCISendString("RF : Report ODR speed, HP Filter freq and Mode\r\n"); /*SCISendString("Ca : Data signed counts a=L LPF data a=H HPF data \r\n"); //SCISendString("Ga : XYZ data as signed g's a=L LPF data a=H HPF data \r\n"); */ //SCISendString("Saa : Stream Data: aa CL=CountsLPF,CH=CountsHPF,GL=G'sLPF,GH=G'sHPF\r\n"); SCISendString("Iaan : Stream Data via Interrupts.\r\n"); SCISendString(" : aa CL=CountsLPF, CH=CountsHPF,GL=G'sLPF,GH=G'sHPF INTn\r\n"); SCISendString(" : n 1= INT1; 2= INT2\r\n"); if (deviceID==1) { SCISendString("Faaww : Stream 14-bit XYZ via FIFO\r\n"); SCISendString(" : aa CL=CountsLPF,CH=CountsHPF,GL=G'sLPF,GH=G'sHPF\r\n"); SCISendString(" : ww: Watermark= 1 to 31\r\n"); } break; /***