Preparation: config-pin P9_22 gpio config-pin P8_27 pruout Code: #include#include #include "resource_table_empty.h" // Base address and offset for GPIO0 #define GPIO0 0x44E09000 #define GPIO_DATAIN 0x138 // Offset for reading GPIO data // Address for GPIO0 data input #define GPIO0_DATAIN (GPIO0 + GPIO_DATAIN) // Pin definitions #define P9_22 (0x1<<2) // Mask for input pin P9_22 #define P8_27 (0x1<<8) // Mask for output pin P8_27 // Declare __R30 as volatile to prevent compiler optimization volatile register uint32_t __R30; // Main program void main(void) { // Pointer to GPIO0 data input register volatile uint32_t *gpio0in = (volatile uint32_t *)GPIO0_DATAIN; uint32_t i = 0; // Wiggle output to indicate start for(i=0;i<1000;i++) { __R30 ^= P8_27; __delay_cycles(1000000); } // Main loop while (1) { // Toggle the output pin P8_27 __R30 ^= P8_27; // Check if the input pin P9_22 is high if (*gpio0in & P9_22) { // Perform action if P9_22 is high __delay_cycles(100000); // Short delay __R30 ^= P8_27; // Toggle P8_27 again } __delay_cycles(1000000); // Main loop delay } }