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board_lantern.c
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board_lantern.c
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/*
board_lantern.c
Copied from simavr example
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#if 0
#include <libgen.h>
#if __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
#endif
#include "sim_avr.h"
#include "avr_ioport.h"
#include "sim_elf.h"
#include "sim_gdb.h"
#include "sim_vcd_file.h"
#include "avr_spi.h"
/* #include "button.h" */
// button_t button;
// int do_button_press = 0;
avr_t * avr = NULL;
avr_vcd_t vcd_file;
// uint8_t pin_state = 0; // current port B
// float pixsize = 64;
// int window;
#if 0
/*
* called when the AVR change any of the pins on port B
* so lets update our buffer
*/
void pin_changed_hook(struct avr_irq_t * irq, uint32_t value, void * param)
{
pin_state = (pin_state & ~(1 << irq->irq)) | (value << irq->irq);
}
void displayCB(void) /* function called whenever redisplay needed */
{
// OpenGL rendering goes here...
glClear(GL_COLOR_BUFFER_BIT);
// Set up modelview matrix
glMatrixMode(GL_MODELVIEW); // Select modelview matrix
glLoadIdentity(); // Start with an identity matrix
float grid = pixsize;
float size = grid * 0.8;
glBegin(GL_QUADS);
glColor3f(1,0,0);
for (int di = 0; di < 8; di++) {
char on = (pin_state & (1 << di)) != 0;
if (on) {
float x = (di) * grid;
float y = 0; //(si * grid * 8) + (di * grid);
glVertex2f(x + size, y + size);
glVertex2f(x, y + size);
glVertex2f(x, y);
glVertex2f(x + size, y);
}
}
glEnd();
glutSwapBuffers();
//glFlush(); /* Complete any pending operations */
}
void keyCB(unsigned char key, int x, int y) /* called on key press */
{
if (key == 'q')
exit(0);
static uint8_t buf[64];
switch (key) {
case 'q':
case 0x1f: // escape
exit(0);
break;
case ' ':
do_button_press++; // pass the message to the AVR thread
break;
case 'r':
printf("Starting VCD trace\n");
avr_vcd_start(&vcd_file);
break;
case 's':
printf("Stopping VCD trace\n");
avr_vcd_stop(&vcd_file);
break;
}
}
// gl timer. if the pin have changed states, refresh display
void timerCB(int i)
{
static uint8_t oldstate = 0xff;
// restart timer
glutTimerFunc(1000/64, timerCB, 0);
if (oldstate != pin_state) {
oldstate = pin_state;
glutPostRedisplay();
}
}
#endif
static void * avr_run_thread(void * oaram)
{
// int b_press = do_button_press;
while (1) {
avr_run(avr);
#if 0
if (do_button_press != b_press) {
b_press = do_button_press;
printf("Button pressed\n");
button_press(&button, 1000000);
}
#endif
}
}
int main(int argc, char *argv[])
{
elf_firmware_t f;
const char * fname = "wordClock-erl";
char path[256];
// sprintf(path, "%s/%s", dirname(argv[0]), fname);
// printf("Firmware pathname is %s\n", path);
elf_read_firmware(fname, &f);
strcpy( f.mmcu, "atmega168" ); // hack
f.frequency = 16000000;
printf("firmware %s f=%d mmcu=%s\n", fname, (int)f.frequency, f.mmcu);
avr = avr_make_mcu_by_name(f.mmcu);
if (!avr) {
fprintf(stderr, "%s: AVR '%s' now known\n", argv[0], f.mmcu);
exit(1);
}
avr_init(avr);
avr_load_firmware(avr, &f);
// initialize our 'peripheral'
// button_init(avr, &button, "button");
// "connect" the output irw of the button to the port pin of the AVR
/*
avr_connect_irq(
button.irq + IRQ_BUTTON_OUT,
avr_io_getirq(avr, AVR_IOCTL_IOPORT_GETIRQ('C'), 0));
*/
// connect all the pins on port B to our callback
#if 0
for (int i = 0; i < 8; i++)
avr_irq_register_notify(
avr_io_getirq(avr, AVR_IOCTL_IOPORT_GETIRQ('B'), i),
pin_changed_hook,
NULL);
#endif
// even if not setup at startup, activate gdb if crashing
avr->gdb_port = 1234;
if (0) {
//avr->state = cpu_Stopped;
avr_gdb_init(avr);
}
/*
* VCD file initialization
*
* This will allow you to create a "wave" file and display it in gtkwave
* Pressing "r" and "s" during the demo will start and stop recording
* the pin changes
*
* Initially set to 100 000 usec = 100 ms. I think it is how often
* to flush its' log.
*/
avr_vcd_init(avr, "gtkwave_output.vcd", &vcd_file, 100 /* usec */);
/* want MOSI, SCLK, XLAT, BLANK */
avr_vcd_add_signal( &vcd_file,
avr_io_getirq(avr, AVR_IOCTL_SPI_GETIRQ(0),
SPI_IRQ_OUTPUT),
8, "MOSI" );
avr_vcd_add_signal(&vcd_file,
avr_io_getirq(avr, AVR_IOCTL_IOPORT_GETIRQ('B'), 1 ),
1, "XLAT" );
avr_vcd_add_signal(&vcd_file,
avr_io_getirq(avr, AVR_IOCTL_IOPORT_GETIRQ('B'), 2 ),
1, "BLANK" );
avr_vcd_add_signal(&vcd_file,
avr_io_getirq(avr, AVR_IOCTL_IOPORT_GETIRQ('B'), 5 ),
1, "SCLK" );
#if 0
avr_vcd_add_signal(&vcd_file,
button.irq + IRQ_BUTTON_OUT, 1 /* bits */ ,
"button" );
// 'raise' it, it's a "pullup"
avr_raise_irq(button.irq + IRQ_BUTTON_OUT, 1);
#endif
avr_vcd_start( &vcd_file );
printf( "Demo launching. " );
#if 0
/*
* OpenGL init, can be ignored
*/
glutInit(&argc, argv); /* initialize GLUT system */
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutInitWindowSize(8 * pixsize, 1 * pixsize); /* width=400pixels height=500pixels */
window = glutCreateWindow("Glut"); /* create window */
// Set up projection matrix
glMatrixMode(GL_PROJECTION); // Select projection matrix
glLoadIdentity(); // Start with an identity matrix
glOrtho(0, 8 * pixsize, 0, 1 * pixsize, 0, 10);
glScalef(1,-1,1);
glTranslatef(0, -1 * pixsize, 0);
glutDisplayFunc(displayCB); /* set window's display callback */
glutKeyboardFunc(keyCB); /* set window's key callback */
glutTimerFunc(1000 / 24, timerCB, 0);
#endif
// the AVR run on it's own thread. it even allows for debugging!
pthread_t run;
pthread_create(&run, NULL, avr_run_thread, NULL);
sleep( 60 ); // wait 5 seconds, then exit.
avr_vcd_stop(&vcd_file);
/* glutMainLoop(); */
}