test-uart.c File Reference

#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "libuart/uart.h"
#include "libhw/hardware.h"
#include "libheart/heartbeat.h"

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Macros
#define	HEARTBEAT_MODAL

Functions
void	led_blink_red ()
void	led_blink_green ()
void	led_blink_blue ()
void	uart_handler (notification note)
int	main (void)

Variables
uint32_t	red_work = 0
uint32_t	blue_work = 0
uint32_t	green_work = 0

Macro Definition Documentation

#define HEARTBEAT_MODAL

Definition at line 22 of file test-uart.c.

Function Documentation

void led_blink_blue

(

)

Definition at line 47 of file test-uart.c.

References blue_work, GPIO_PIN_2, GPIO_PORTF_BASE, GPIOPinRead(), GPIOPinWrite(), and os_surrender_context.

Referenced by main().

                      {
    while (1) {
        ++blue_work;
        GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2,
                     GPIO_PIN_2 ^ GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_2));
        os_surrender_context();
    }
}

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void led_blink_green

(

)

Definition at line 38 of file test-uart.c.

References GPIO_PIN_3, GPIO_PORTF_BASE, GPIOPinRead(), GPIOPinWrite(), and green_work.

Referenced by uart_handler().

                       {
    /* while (1) { */
        ++green_work;
        GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3,
                     GPIO_PIN_3 ^ GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_3));
        /* os_surrender_context(); */
    /* } */
}

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void led_blink_red

(

)

Definition at line 29 of file test-uart.c.

References GPIO_PIN_1, GPIO_PORTF_BASE, GPIOPinRead(), GPIOPinWrite(), os_surrender_context, and red_work.

Referenced by main().

                     {
    while (1) {
        ++red_work;
        GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1,
                     GPIO_PIN_1 ^ GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_1));
        os_surrender_context();
    }
}

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int main

(

void

)

Accept input on UART 0, and parrot input back out to UART 0.

Returns

Exit status

Definition at line 70 of file test-uart.c.

References DL_SOFT, GPIO_PIN_1, GPIO_PIN_2, GPIO_PIN_3, GPIO_PORTF_BASE, heart_init(), hw_daemon(), hw_init_and_subscribe, HW_UART, Hz, INT_UART0, IntMasterDisable(), IntMasterEnable(), led_blink_blue(), led_blink_red(), os_launch(), os_threading_init(), postpone_death, schedule(), SYSCTL_OSC_MAIN, SYSCTL_SYSDIV_1, SYSCTL_USE_OSC, SYSCTL_XTAL_16MHZ, SysCtlClockSet(), UART0_BASE, UART_DEFAULT_BAUD_RATE, uart_handler(), uart_metadata_init, and uart_send_string().

               {

    SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
                   SYSCTL_XTAL_16MHZ);

    IntMasterDisable();

    heart_init();
    heart_init_(GPIO_PORTF_BASE, GPIO_PIN_1);
    heart_init_(GPIO_PORTF_BASE, GPIO_PIN_2);
    heart_init_(GPIO_PORTF_BASE, GPIO_PIN_3);

    uart_metadata_init(UART_DEFAULT_BAUD_RATE, UART0_BASE, INT_UART0);
    hw_init_and_subscribe(HW_UART, uart_metadata, uart_handler);

    os_threading_init();
    schedule(led_blink_red, 100 Hz, DL_SOFT);
    schedule(led_blink_blue, 100 Hz, DL_SOFT);
    schedule(hw_daemon, 100 Hz, DL_SOFT);

    /* Prompt for text to be entered. */
    uart_send_string("Enter text:");

    IntMasterEnable();
    os_launch();
    postpone_death();
}

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void uart_handler

(

notification

note

)

Read the next character from the UART and write it back to the UART.

Returns

void

Definition at line 59 of file test-uart.c.

References notification::_char, led_blink_green(), and uart_send_char().

Referenced by main().

                                     {

    char recv = note._char;

    uart_send_char(recv);
    led_blink_green();
}

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Variable Documentation

uint32_t blue_work = 0

Definition at line 26 of file test-uart.c.

Referenced by led_blink_blue().

uint32_t green_work = 0

Definition at line 27 of file test-uart.c.

Referenced by led_blink_green().

uint32_t red_work = 0

Definition at line 25 of file test-uart.c.

Referenced by led_blink_red().