//******************************************************************************
// MSP430F530x Demo - Software Toggle PU.0/1
//
// Description: Toggle PU.0/1 by xor'ing PU.0/1 inside of a software loop. In
// the example code, initial configuration is PU.0 = low and PU.1 = high.
//
// Note: Since the LDO is not enabled in this case, an external connection
// between the device VCC and LDOO pin is required for the PortU operation
//
// ACLK = 32.768kHz, MCLK = SMCLK = default DCO~1MHz
//
// MSP430F530x
// -----------------
// /|\| VCC|--
// | | | |
// --|RST LDOO|<-
// | |
// | PU.0|--> Toggle
// | PU.1|--> Toggle (complementary to PU.0)
//
// B. Nisarga
// Texas Instruments Inc.
// Dec 2010
// Built with CCSv4 and IAR Embedded Workbench Version: 4.21
//******************************************************************************
#include <msp430f5310.h> // To include latest F530x and F5310 header file v1.1, refer
// to the "ReadMe - Header" file in the code ex zip file
void main(void)
{
volatile unsigned int i;
WDTCTL = WDTPW+WDTHOLD; // Stop WDT
// Configure PU.0 as output pins
LDOKEYPID = 0x9628; // Enable access to config registers
PUCTL |= PUOPE + PUOUT1; // PortU input enable
// PU.0 = low and PU.1 = high
LDOKEYPID = 0x0; // Disbale access to config registers
while(1) // continuous loop
{
for(i=50000;i>0;i--); // Delay
LDOKEYPID = 0x9628; // Enable access to config registers
PUCTL ^= (PUOUT0 + PUOUT1); // XOR PU.0/1
LDOKEYPID = 0x0; // Disbale access to config registers
}
}
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