现在要用到MSP4320G2211的SPI 做东西，自己软件模拟的SPI怎么也调不通，求大神分享一个例程，多谢
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现在要用到MSP4320G2211的SPI 做东西，自己软件模拟的SPI怎么也调不通，求大神分享一个例程，多谢
/* --COPYRIGHT--,BSD_EX
* Copyright (c) 2012, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************
*
* MSP430 CODE EXAMPLE DISCLAIMER
*
* MSP430 code examples are self-contained low-level programs that typically
* demonstrate a single peripheral function or device feature in a highly
* concise manner. For this the code may rely on the device's power-on default
* register values and settings such as the clock configuration and care must
* be taken when combining code from several examples to avoid potential side
* effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
* for an API functional library-approach to peripheral configuration.
*
* --/COPYRIGHT--*/
//******************************************************************************
// MSP430G2x21/G2x31 Demo - SPI full-Duplex 3-wire Master
//
// Description: SPI Master communicates full-duplex with SPI Slave using
// 3-wire mode. The level on P1.4 is TX'ed and RX'ed to P1.0.
// Master will pulse slave reset for synch start.
// ACLK = n/a, MCLK = SMCLK = Default DCO
//
// **** used with "msp430g2x21_usi_03.c" ****
//
// Slave Master
// MSP430G2x21/G2x31 MSP430G2x21/G2x31
// ----------------- -----------------
// | XIN|- /|\| XIN|-
// | | | | |
// | XOUT|- --|RST XOUT|-
// | | /|\ | |
// | RST/NMI|--+<----|P1.2 |
// LED <-|P1.0 | | P1.4|<-
// ->|P1.4 | | P1.0|-> LED
// | SDI/P1.7|<-------|P1.6/SDO |
// | SDO/P1.6|------->|P1.7/SDI |
// | SCLK/P1.5|<-------|P1.5/SCLK |
//
// D. Dang
// Texas Instruments Inc.
// October 2010
// Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10
//******************************************************************************
#include <msp430.h>
int main(void)
{
volatile unsigned int i;
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P1OUT = 0x10; // P1.4 set, else reset
P1REN |= 0x10; // P1.4 pullup
P1DIR = 0x01; // P1.0 output, else input
USICTL0 |= USIPE7 + USIPE6 + USIPE5 + USIMST + USIOE; // Port, SPI master
USICTL1 |= USIIE; // Counter interrupt, flag remains set
USICKCTL = USIDIV_4 + USISSEL_2; // /16 SMCLK
USICTL0 &= ~USISWRST; // USI released for operation
USISRL = P1IN; // init-load data
P1DIR |= 0x04; // Reset Slave
P1DIR &= ~0x04;
for (i = 0xFFF; i > 0; i--); // Time for slave to ready
USICNT = 8; // init-load counter
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
// USI interrupt service routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USI_VECTOR
__interrupt void universal_serial_interface(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USI_VECTOR))) universal_serial_interface (void)
#else
#error Compiler not supported!
#endif
{
if (0x10 & USISRL)
P1OUT |= 0x01;
else
P1OUT &= ~0x01;
USISRL = P1IN;
USICNT = 8; // re-load counter
}
/* --COPYRIGHT--,BSD_EX
* Copyright (c) 2012, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************
*
* MSP430 CODE EXAMPLE DISCLAIMER
*
* MSP430 code examples are self-contained low-level programs that typically
* demonstrate a single peripheral function or device feature in a highly
* concise manner. For this the code may rely on the device's power-on default
* register values and settings such as the clock configuration and care must
* be taken when combining code from several examples to avoid potential side
* effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
* for an API functional library-approach to peripheral configuration.
*
* --/COPYRIGHT--*/
//******************************************************************************
// MSP430G2x21/G2x31 Demo - SPI full-Duplex 3-wire Slave
//
// Description: SPI Master communicates full-duplex with SPI Slave using
// 3-wire mode. The level on P1.4 is TX'ed and RX'ed to P1.0.
// Master will pulse slave reset for synch start.
// ACLK = n/a, MCLK = SMCLK = Default DCO
//
// **** used with "msp430g2x21_usi_02.c" ****
//
// Slave Master
// MSP430G2x21/G2x31 MSP430G2x21/G2x31
// ----------------- -----------------
// | XIN|- /|\| XIN|-
// | | | | |
// | XOUT|- --|RST XOUT|-
// | | /|\ | |
// | RST/NMI|--+<----|P1.2 |
// LED <-|P1.0 | | P1.4|<-
// ->|P1.4 | | P1.0|-> LED
// | SDI/P1.7|<-------|P1.6/SDO |
// | SDO/P1.6|------->|P1.7/SDI |
// | SCLK/P1.5|<-------|P1.5/SCLK |
//
// D. Dang
// Texas Instruments Inc.
// October 2010
// Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10
//******************************************************************************
#include <msp430.h>
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P1OUT = 0x10; // P1.4 set, else reset
P1REN |= 0x10; // P1.4 pullup
P1DIR = 0x01; // P1.0 output, else input
USICTL0 |= USIPE7 + USIPE6 + USIPE5 + USIOE; // Port, SPI slave
USICTL1 |= USIIE; // Counter interrupt, flag remains set
USICTL0 &= ~USISWRST; // USI released for operation
USISRL = P1IN; // init-load data
USICNT = 8; // init-load counter
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
// USI interrupt service routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USI_VECTOR
__interrupt void universal_serial_interface(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USI_VECTOR))) universal_serial_interface (void)
#else
#error Compiler not supported!
#endif
{
if (0x10 & USISRL)
P1OUT |= 0x01;
else
P1OUT &= ~0x01;
USISRL = P1IN;
USICNT = 8; // re-load counter
}
/* --COPYRIGHT--,BSD_EX
* Copyright (c) 2012, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************
*
* MSP430 CODE EXAMPLE DISCLAIMER
*
* MSP430 code examples are self-contained low-level programs that typically
* demonstrate a single peripheral function or device feature in a highly
* concise manner. For this the code may rely on the device's power-on default
* register values and settings such as the clock configuration and care must
* be taken when combining code from several examples to avoid potential side
* effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
* for an API functional library-approach to peripheral configuration.
*
* --/COPYRIGHT--*/
//******************************************************************************
// MSP430G2x21/G2x31 Demo - USI SPI Interface with HC165/164 Shift Registers
//
// Description: Demonstrate USI in two-way SPI mode. Data are read from
// an HC165, and same data written back to the HC164.
// ACLK = n/a MCLK = SMCLK = default DCO, USICLK = SMCLK/2
// //*USART0 control bits are in different SFR's from other MSP430's//
//
// MSP430G2x21/G2x31
// -----------------
// /|\| XIN|-
// | | | ^ HC164
// HC165 --|RST XOUT|- | -------------
// ---------- | | |-|/CLR,B | 8
// 8 | /LD|<---|P1.1 SIMO0/P1.6|------>|A Qx|--\->
// -\->|A-H CLK|<---|P1.5/SCLK0 - P1.5|------>|CLK |
// |-|INH QH|--->|P1.7/SOMI0 | | |
// |-|SER | | | | |
// - | | | | | |
//
// D. Dang
// Texas Instruments Inc.
// October 2010
// Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10
//******************************************************************************
#include <msp430.h>
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P1OUT = 0;
P1OUT |= 0x02;
P1DIR |= 0x02;
USICTL0 |= USIPE7 + USIPE6 + USIPE5 + USIMST + USIOE; // Port, SPI Master
USICTL1 |= USICKPH + USIIE; // Counter interrupt, flag remains set
USICKCTL = USIDIV_1 + USISSEL_2; // /2 SMCLK
USICTL0 &= ~USISWRST; // USI released for operation
USICNT = 8; // init-load counter
while (1) // Loop
{
unsigned i;
for (i = 0xFFFF; i > 0; i--); // Delay
while (!(USIIFG & USICTL1)); // Counter clear?
P1OUT &= ~0x02; // Latch data into 'HC165
P1OUT |= 0x02;
// ******************** // Read data are ready to be written
USICNT = 8; // re-load counter
}
}
/* --COPYRIGHT--,BSD_EX
* Copyright (c) 2012, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************
*
* MSP430 CODE EXAMPLE DISCLAIMER
*
* MSP430 code examples are self-contained low-level programs that typically
* demonstrate a single peripheral function or device feature in a highly
* concise manner. For this the code may rely on the device's power-on default
* register values and settings such as the clock configuration and care must
* be taken when combining code from several examples to avoid potential side
* effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
* for an API functional library-approach to peripheral configuration.
*
* --/COPYRIGHT--*/
//******************************************************************************
// MSP430G2x21/G2x31 Demo - USI SPI Interface to TLC549 8-bit ADC
//
// Description: This program demonstrates the USI in SPI mode interface to a
// TLC549 8-bit ADC. If AIN > 0.5(REF+ - REF-), P1.0 set, else reset.
// ACLK = n/a, MCLK = SMCLK = default DCO, UCICLK = SMCLK/4
// //** VCC must be at least 3v for TLC549 **//
//
// MSP430G2x21/G2x31
// -----------------
// /|\| XIN|-
// TLC549 | | |
// ------------- --|RST XOUT|-
// | CS|<---|P1.1 |
// | DATAOUT|--->|P1.7/SOMI P1.0|-->LED
// ~>|AIN I/O CLK|<---|P1.5/SCLK |
//
// D. Dang
// Texas Instruments Inc.
// October 2010
// Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10
//******************************************************************************
#include <msp430.h>
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P1OUT = 0;
P1DIR |= 0x03;
USICTL0 |= USIPE7 + USIPE5 + USIMST + USIOE; // Port, SPI master
USICTL1 |= USIIE; // Counter interrupt, flag remains set
USICKCTL = USIDIV_2 + USISSEL_2; // /4 SMCLK
USICTL0 &= ~USISWRST; // USI released for operation
USICNT = 8; // init-load counter
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
// USI interrupt service routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USI_VECTOR
__interrupt void universal_serial_interface(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USI_VECTOR))) universal_serial_interface (void)
#else
#error Compiler not supported!
#endif
{
P1OUT |= 0x02; // Disable TLC549
if (USISRL > 0x7F)
P1OUT |= 0x01;
else
P1OUT &= ~0x01;
P1OUT &= ~0x02; // Enable TLC549
USICNT = 8; // re-load counter
}
