Initialize PORTB for UART1 with 9600 baud rate
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1a6248ef11
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19
main.c
19
main.c
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@ -19,4 +19,23 @@ void GPIO_PORT_F_init(void)
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}
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void GPIO_PORT_B_init(void)
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{
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SYSCTL_RCGCGPIO_R |= 0x02; // ENABLE CLOCK FOR GPIOB
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SYSCTL_RCGCUART_R |= 0x02; // ENABLE CLOCK FOR UART1
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GPIO_PORTB_DEN_R |= 0x03; // DIGITAL ENABLE FOR PB0 AND PB1
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GPIO_PORTB_AFSEL_R |= 0x03; // ENABLE ALTERNATE FUNCTION ON PB0,PB1
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GPIO_PORTB_PCTL_R = (GPIO_PORTB_PCTL_R & 0xFFFFFF00) | 0x00000011; // Set PB0, PB1 for UART
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UART1_CTL_R &= ~0x01; // DISABLE UART1 DURING SETUP
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UART1_IBRD_R = 104; // Set integer part of baud rate (for 9600 baud at 16 MHz clock)
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UART1_FBRD_R = 11; // Set fractional part of baud rate
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UART1_LCRH_R = 0x62; // 8-bit, odd parity, 1 stop bit
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UART1_CC_R = 0x00; // Use system clock
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UART1_CTL_R |= 0x301; // Enable UART1, RX, and TX
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}
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