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54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
#include "tm4c.h" // the same as "lm4f120h5qr.h" in the video
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#define LED_RED (1U << 1)
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#define LED_BLUE (1U << 2)
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#define LED_GREEN (1U << 3)
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int main(void) {
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unsigned int a = 0x5A5A5A5A;
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unsigned int b = 0xDEADBEEF;
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unsigned int c;
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c = a | b; // OR
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c = a & b; // AND
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c = a ^ b; // XOR
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c = ~b; // NOT
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c = a << 1; // lef-shift
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c = a << 2;
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c = b >> 1; // right-shift
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c = b >> 3;
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int x = 1024;
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int y = -1024;
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int z;
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z = x >> 3;
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z = y >> 3;
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SYSCTL_RCGCGPIO_R |= (1U << 5); // enable clock for GPIOF
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GPIO_PORTF_DIR_R |= (LED_RED | LED_BLUE | LED_GREEN);
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GPIO_PORTF_DEN_R |= (LED_RED | LED_BLUE | LED_GREEN);
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// start with turning all LEDs off
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GPIO_PORTF_DATA_R &= ~(LED_RED | LED_BLUE | LED_GREEN);
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GPIO_PORTF_DATA_R |= LED_BLUE;
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while (1) {
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GPIO_PORTF_DATA_R |= LED_RED; // turn the red LED on
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int volatile counter = 0;
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while (counter < 1000000) { // delay loop
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++counter;
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}
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GPIO_PORTF_DATA_R &= ~LED_RED; // turn the red LED off
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counter = 0;
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while (counter < 1000000) { // delay loop
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++counter;
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}
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}
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//return 0; // unreachable code
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}
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