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the SPI receive buffer contains any new data that is yet to be read as indicated by the SPIxSTAT bit. This bit is cleared by hardware when the data is read from the buffer. Source File: DataRdySPI1.c DataRdySPI2.c Code Example: while(DataRdySPI1()); ReadSPI1 ReadSPI2 Description: This function reads the content of the SPI Receive Buffer (SPIxBUF) register. Include: spi.h Prototype: unsigned int ReadSPI1(void); unsigned int ReadSPI2(void); Arguments: None Return Value: This function returns the content of Receive Buffer (SPIxBUF) register. If a value of ‘-1’ is returned, it indicates that there is no data to be read from the SPI buffer. Remarks: This function returns the content of the Receive Buffer register. If 16-bit communication is enabled, the data in the SPIxRBF register is returned. If 8-bit communication is enabled, then the lower byte of SPIxBUF is returned. The SPIxBUF is read only if it contains any data as indicated by the SPISTATbit. Otherwise, a value of ‘-1’ is returned. Source File: ReadSPI1.c ReadSPI2.c Code Example: unsigned int RX_data; RX_data = ReadSPI1(); dsPIC ® Language Tools Libraries DS51456B-page 160 WriteSPI1 WriteSPI2 2004 Microchip Technology Inc. Description: This function writes the data to be transmitted into the Transmit Buffer (SPIxBUF) register. Include: spi.h PRI_PRESCAL_64_1 config2 này chứa các thông số phải được cấu hình trong SPIxSTAT đăng ký theo quy định dưới đây: SPI Enable / Disable SPI_ENABLE SPI_DISABLE SPI hoạt động chế độ Idle SPI_IDLE_CON SPI_IDLE_STOP Nhận rõ ràng tràn cờ bit SPI_RX_OVFLOW_CLR Trở lại giá trị: Không Bình luận: chức năng này khởi tạo các mô-đun SPI và thiết lập chế độ nhàn rỗi hoạt động. Source File: OpenSPI1.c OpenSPI2.c Mã số Ví dụ: config1 = FRAME_ENABLE_OFF & FRAME_SYNC_OUTPUT & ENABLE_SDO_PIN & SPI_MODE16_ON & SPI_SMP_ON & SPI_CKE_OFF & SLAVE_SELECT_ENABLE_OFF & CLK_POL_ACTIVE_HIGH & MASTER_ENABLE_ON & SEC_PRESCAL_7_1 & PRI_PRESCAL_64_1; config2 = SPI_ENABLE & SPI_IDLE_CON & SPI_RX_OVFLOW_CLR OpenSPI1 (config1, config2); OpenSPI1 (Tiếp theo) OpenSPI2 dsPIC ® Thư viện Công cụ Ngôn ngữ DS51456B trang 162 2004 Microchip Technology Inc putsSPI1 putsSPI2
Prototype: void WriteSPI1(unsigned int data); void WriteSPI2(unsigned int data); Arguments: data This is the data to be transmitted which will be stored in SPI buffer. Remarks: This function writes the data (byte/word) to be transmitted into the transmit buffer. If 16-bit communication is enabled,the 16-bit value is written to the transmit buffer. If 8-bit communication is enabled, then upper byte is masked and then written to the transmit buffer. Return Value: None Source File: WriteSPI1.c WriteSPI2.c Code Example: WriteSPI1(0x3FFF); OpenSPI1 OpenSPI2 Description: This function configures the SPI module Include: spi.h Prototype: void OpenSPI1(unsigned int config1, unsigned int config2); void OpenSPI2(unsigned int config1, unsigned int config2); Arguments: config1 This contains the parameters to be configured in the SPIxCON register as defined below: Framed SPI support Enable/Disable FRAME_ENABLE_ON FRAME_ENABLE_OFF Frame Sync Pulse direction control FRAME_SYNC_INPUT FRAME_SYNC_OUTPUT SDO Pin Control bit DISABLE_SDO_PIN ENABLE_SDO_PIN Word/Byte Communication mode SPI_MODE16_ON SPI_MODE16_OFF SPI Data Input Sample phase SPI_SMP_ON SPI_SMP_OFF Mô tả: Chức năng này ghi một chuỗi các dữ liệu được truyền vào SPI truyền đệm. Bao gồm: spi.h Nguyên mẫu: làm mất hiệu lực putsSPI1 (unsigned int dài, int * wrptr); làm mất hiệu lực putsSPI2 (unsigned int dài, int * wrptr); Đối số: chiều dài Đây là số từ dữ liệu / byte được truyền đi. wrptr Đây là con trỏ đến chuỗi dữ liệu được truyền đi. Trở lại giá trị: Không Ghi chú: Chức năng này ghi chiều dài xác định các từ dữ liệu / byte được truyền vào bộ đệm truyền. Một khi bộ đệm truyền đầy, nó chờ đợi cho đến khi dữ liệu được truyền và sau đó ghi dữ liệu tiếp theo vào sổ đăng ký Transmit. Việc kiểm soát vẫn còn trong functionif SPI mô-đun isdisabled trong khi điều này SPITBF bit được thiết lập. Source File: putsSPI1.c putsSPI2.c Mã số Ví dụ: putsSPI1 (10, Txdata_loc); getsSPI1 getsSPI2 Mô tả: Chức năng này lần đọc một chuỗi các dữ liệu chiều dài quy định và lưu trữ nó vào vị trí quy định. Bao gồm: spi.h Nguyên mẫu: int getsSPI1 ( chiều dài int unsigned, int * rdptr, int spi_data_wait); int getsSPI2 ( chiều dài int unsigned, int * rdptr, int spi_data_wait); Đối số: chiều dài Đây là chiều dài của chuỗi được nhận. rdptr Đây là con trỏ đến vị trí dữ liệu nhận phải được lưu trữ. spi_data_wait Đây là số thời gian chờ cho các mô-đun đã phải chờ đợi trước khi trở về.
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2004 Microchip Technology Inc. DS51
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dsPIC ®LANGUAGE TOOLS LIBRARIES 20
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215 4.11 variable argument lists .
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and macros for standard C operation
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This documentation is provided on t
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• Development Systems Information
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data section. The alternate startup
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specific libraries.) When compiling
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esults will occur when the function
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A batch file named makedsplib.batis
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-15 or smaller than -1.0. Analogous
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CORCON saved, used, restored DOand
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fractional* srcV ); Arguments: numE
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VectorCorrelateis 4 less than whate
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less than or equal to any previous
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Remarks: The negated value of 0x800
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Cycles (including C-function call a
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plus program words from VectorCopy
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Prototype: extern fractional* Black
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); Arguments: numElems number of el
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the base address of the matrix. Bec
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in default RAM memory space (X-Data
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0 ≤i < numRows1 0 ≤j < numCols2
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20 + 3(numRows*numCols) MatrixSubtr
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(of the same dimension) whose eleme
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history of the filter. After perfor
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Oppenheim and Ronald Schafer’s Di
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modulo buffer. Source samples, x[n]
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FIRDelayInit Description: FIRDelayI
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filter. Include: dsp.h Prototype: e
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FIRStruct* filter, fractional* refS
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energyEstimate estimated energy val
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fractional* delayBase ); Arguments:
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Source File: iircan.asm DSP Library
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srcSamps pointer to source samples
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} IIRTransposedStruct; extern fract
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no REPEATinstructions Program words
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Language Tools Libraries DS51456B-p
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for instance if: a = Op1 (b, c), wi
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and stores the results in the desti
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Description: DCTIPcomputes the Disc
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int log2N, fractcomplex* dstCV, fra
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fractcomplex* srcCV, fractcomplex*
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value can be calculated using the i
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A complex vector of size N/2 must h
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specific libraries. When compiling
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Control I/O pin definitions RW_PIN
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y calling the BusyXLCD()function. T
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COM1_COM16 COM16_COM1 Display On/Of
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Source File: CAN1AbortAll.c CAN2Abo
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char CAN2IsRXPassive(void); Argumen
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CAN2SendMessage Description: This f
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CAN2SetMask Description: This funct
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CAN_IDLE_CON_NO_WAITCAN On in Idle
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CAN_INDI_INVMESS_DIS CAN_INDI_WAK_D
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{ /* Length of data tobe transmitte
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Return Value: If the value of DONE
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dsPIC Peripheral Libraries 2004 Mic
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..... SKIP_SCAN_AN15 Return Value:
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DS51456B-page 100 3.5.2 Individual
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3.6 ADC10 FUNCTIONS This section co
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Module On/Off ADC_MODULE_ON ADC_MOD
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ADPCFG register as defined below: E
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ADC_CHX_NEG_SAMPLEB_AN6AN7AN8 ADC_C
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Scanselect = SKIP_SCAN_AN2 & SKIP_S
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dsPIC ® Language Tools Libraries D
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void OpenTimer4(unsigned int config
Page 139 and 140: Tx_SOURCE_EXT Tx_SOURCE_INT period
Page 141 and 142: 3.7.2 Individual Macros WriteTimer2
Page 143 and 144: SetPriorityIntT4 SetPriorityIntT5 D
Page 145 and 146: Code Example: char reset_state; res
Page 147 and 148: Arguments: None Remarks: This macro
Page 149 and 150: stored into CNPU2 register. The upp
Page 151 and 152: SetPriorityInt2 SetPriorityInt3 Set
Page 153 and 154: IC_INT_PRIOR_3 IC_INT_PRIOR_4 IC_IN
Page 155 and 156: ReadCapture3 ReadCapture4 ReadCaptu
Page 157 and 158: dsPIC ® Language Tools Libraries D
Page 159 and 160: void CloseOC4(void); void CloseOC5(
Page 161 and 162: Include: outcompare.h Prototype: vo
Page 163 and 164: Include: outcompare.h Prototype: un
Page 165 and 166: SetDCOC3PWM SetDCOC4PWM SetDCOC5PWM
Page 167 and 168: Code Example: pulse_start = 0x40 ;
Page 169 and 170: T3CON = 0x8000; T1CON = 0X8000; /*
Page 171 and 172: Transmit Interrupt Priority UART_TX
Page 173 and 174: UART_1STOPBIT config2 This contains
Page 175 and 176: Source File: WriteUART1.c WriteUART
Page 177 and 178: Code Example: EnableIntU2TX; Disabl
Page 179 and 180: ConfigIntUART1(UART_RX_INT_EN & UAR
Page 181 and 182: DCI_INT_PRI_4 DCI_INT_PRI_5 DCI_INT
Page 183 and 184: DCI_FRAME_LEN_15 DCI_FRAME_LEN_14 .
Page 185 and 186: Prototype: unsigned int ReadDCI(uns
Page 187 and 188: contents are sent duringthe timeslo
Page 189: SPI_INT_PRI_4 SPI_INT_PRI_5 SPI_INT
Page 193 and 194: Remarks: This functions initializes
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Page 197 and 198: SEC_PRESCAL_7_1 & PRI_PRESCAL_64_1;
Page 199 and 200: enables/disables the interrupt. Sou
Page 201 and 202: QEI_QE_CLK_DIVIDE_1_32 QEI_QE_CLK_D
Page 203 and 204: } int main(void) { unsigned int max
Page 205 and 206: dsPIC ® Language Tools Libraries D
Page 207 and 208: PWM_PEN2H PWM_PDIS2H PWM_PEN1H PWM_
Page 209 and 210: PWM_POUT_1L Bit defines related to
Page 211 and 212: PWM_DTS3I_UA PWM_DTS3I_UB Dead Time
Page 213 and 214: PWM_OVA3H_INACTIVE PWM_OVA2H_INACTI
Page 215 and 216: Language Tools Libraries DS51456B-p
Page 217 and 218: #include #include void __attribute
Page 219 and 220: Prototype: void ConfigIntI2C(unsign
Page 221 and 222: Arguments: None Return Value None R
Page 223 and 224: a #definestatement in the i2c.h Sou
Page 225 and 226: I2C_IDLE_CON SCL Release Control bi
Page 227 and 228: i2c_data_wait This is the timeout c
Page 229 and 230: 3.17.2 Individual Macros StartI2C D
Page 231 and 232: Arguments: None Remarks: This macro
Page 233 and 234: • src\libm- source code for math
Page 235 and 236: Remarks: The expression evaluates t
Page 237 and 238: if (isalpha(ch)) printf("# is alpha
Page 239 and 240: Remarks: A character is considered
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ch = '&'; if (isprint(ch)) printf("
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int ch; ch = 'B'; printf("B changes
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DBL_MIN_10_EXP Description: Minimum
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Include: Value: 1 Remarks: Rounds
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Description: Maximum value of a lon
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abort - terminating See the example
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} Output: Illegal instruction execu
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must be at least one named argument
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Include: Prototype: #define va_end
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to perform input and output operati
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_IOLBF Description: Indicates line
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Include: Prototype: void clearerr(
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Include: Prototype: int feof(FILE
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Error indicator reset Standard C Li
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fpos_t pos; char buf[25]; if ((myfi
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Description: Opens a file. Include:
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Explanation: afile1must exist befor
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Arguments: s string to be written s
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10.0/2 = 5.000000 10.0/3 = 3.333333
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Explanation: This program uses myfi
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SEEK_CUR- seeks from the current po
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*pos if successful; otherwise, fset
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if ((myfile = fopen("afile.out", "r
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10.0/2 = 5.000000 10.0/3 = 3.333333
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Return Value: Returns the character
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Standard C Libraries with Math Func
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e, E doublein scientific notation f
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putchar Description: Put a characte
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Output: File renamed dsPIC ® Langu
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® Language Tools Libraries DS51456
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setbuf(myfile1, NULL); printf("myfi
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int main(void) { char sbuf[100], s[
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Include: Prototype: char *tmpnam(c
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ungetc (Continued) Standard C Libra
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va_list ap; va_start(ap, fmt); prin
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with operands of type long. Include
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i = -2; printf("The absolute value
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(int) strtol(s,0,10)except it does
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eturn 0; else return 1; } Output: S
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printf("For div(%d, %d)\n", x, y);
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free Description: Frees memory. Inc
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printf("The absolute value of %7ld
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is undefined. malloc Description: A
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with the key Remarks: qsortoverwrit
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object. If reallocsucceeds in alloc
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optional whitespace, followed by an
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® Language Tools Libraries DS51456
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Prototype: size_t wcstombs(char *s,
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characters in s2and returns a value
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printf("\n"); memcpy(buf1, buf3, 5)
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printf("\n"); printf("memset(\"%s\"
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printf("buf1 : %s\n\n", buf1); ptr
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uf3 : Why? buf2 comes before buf1 b
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str1, str2, res); res = strcspn(str
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(string length = 11 characters) str
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s2 second string n number of charac
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printf("buf1 : %s\n", buf1); printf
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contained in s2. Example: #include
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else printf("%c not found\n", ch2);
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printf("\"%s\" found at position %d
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Output: str1 : Here, on top of the
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MMMis month of the year ddis day of
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printf("Local time = %s\n", asctime
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Example: #include /* for strftime,
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(in magnitude) to be represented in
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Argument: x value between -1 and 1
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y = atan (x); printf("The arctangen
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if (errno) perror("Error"); printf(
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for (i=0; i
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} Output: The cosine of -1.000000 i
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Error: range error The hyperbolic c
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errno = 0; x = -1E3; y = exp (x); i
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y = fabs (x); printf("The absolute
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-2.0F, -1.75F, -1.5F, -1.25F}; floa
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x, y, z); errno = 0; x = 7.0; y = 0
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perror("Error"); printf("For fmodf
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Return Value: Returns the fraction,
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printf("For a number = %fand an exp
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ldexpf(-0.625000, 2) = -2.500000 Fo
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x, y); errno = 0; x = 0.0; y = log1
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NaN is returned if xis a negative n
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Arguments: x single precision float
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The sine of -1.000000 is -0.841471
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The hyperbolic sine of 0.000000 is
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Error: domain error The square root
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Return Value: Returns the tangent o
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x, y); } Output: The hyperbolic tan
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the calling process's data segment.
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eginning of the file. A return valu
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through the simulator. The return v
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uffer points to the storage locatio
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div.sd __builtin_divud Description:
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mul.uu dsPIC ® Language Tools Libr
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Return Value: Returns the psv page
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__builtin_mulus ...................
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arcsine Double Floating Point......
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Set Priority Macro.................
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isxdigit...........................
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String to Unsigned LongInteger ....
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DCT................................
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EnableIntlCx.......................
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Single Floating Point .............
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DBL_MAX_10_EXP ....................
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Single Floating Point..............
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tanhf .............................
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Set Capture Interrupt Priority ....
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ldiv_t ............................
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long long unsigned int Maximum Valu
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MatrixInvert ......................
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Single Floating Point..............
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system.............................
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Quick Sort ........................
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SEEK_SET...........................
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Minimum Value .....................
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va_arg ............................
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atoi ..............................
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strncpy ...........................
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Write..............................
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unsigned short int Maximum Value ..
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Zero, divide by....................
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