o_195h4n6al16jb186b1b2qs7fgssa.pdf

transmitted into the transmit buffer.
Once the transmit buffer is full, it waits till the data gets transmitted and
then writes the next data into the Transmit register.
The control remains in this functionif SPI module isdisabled while
SPITBF bit is set.
Source File: putsSPI1.c
putsSPI2.c
Code Example: putsSPI1(10,Txdata_loc);
getsSPI1
getsSPI2
Description: This function reads a string of data of specified length and stores it
into
the location specified.
Include: spi.h
Prototype: unsigned int getsSPI1(
unsigned int length,
unsigned int *rdptr,
unsigned int spi_data_wait);
unsigned int getsSPI2(
unsigned int length,
unsigned int *rdptr,
unsigned int spi_data_wait);
Arguments: length This is the length of the string to be received.
rdptr This is the pointer to the location where the data
received have to be stored.
spi_data_wait This is the timeout count for which the module
has to wait before return.
If the timeout count is ‘N’, the actual timeout
would be about (19*N - 1) instruction cycles.
Return Value: This function returns the number of bytes yet to be received.
If the return value is a ‘0’, it indicates that the complete string has been
received.
If the return value is a nonzero, it indicates thatthe complete string has
not been received.
Remarks: None
Source File: getsSPI1.c
getsSPI2.c
Code Example: Datarem = getsSPI1(6, Rxdata_loc, 40);
dsPIC Peripheral Libraries
TMR1 = 0;
thời gian chờ = 0;
TRISDbits.TRISD0 = 0;
/ * Cấu hình SPI2 ngắt * /
ConfigIntSPI2 (SPI_INT_EN & SPI_INT_PRI_6);
/ * Cấu hình spi1 mô-đun totransmit giá trị timer1 16 bit
trong chế độ thạc sĩ * /
SPICONValue = 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;
SPISTATValue = SPI_ENABLE & SPI_IDLE_CON &
SPI_RX_OVFLOW_CLR;
OpenSPI1 (SPICONValue, SPISTATValue);
dsPIC Thư viện ngoại vi
2004 Microchip Technology Inc DS51456B trang 165
/ * Cấu hình SPI2 mô-đun để nhận được giá trị bộ đếm thời gian 16 bit
chế độ nô lệ * /
SPICONValue = FRAME_ENABLE_OFF & FRAME_SYNC_OUTPUT &
ENABLE_SDO_PIN & SPI_MODE16_ON &
SPI_SMP_OFF & SPI_CKE_OFF &
SLAVE_SELECT_ENABLE_OFF &
CLK_POL_ACTIVE_HIGH &
MASTER_ENABLE_OFF &
SEC_PRESCAL_7_1 &
PRI_PRESCAL_64_1;
SPISTATValue = SPI_ENABLE & SPI_IDLE_CON &
PI_RX_OVFLOW_CLR;
OpenSPI2 (SPICONValue, SPISTATValue);
T1CON = 0x8000;
trong khi (thời gian chờ