int main()
{
int i;
unsigned long sw_time_1, sw_time_2;
//enable the temperature sensor
temp_sensor_init();
//enable uCProbe communication
ProbeCom_Init();
ProbeRS232_Init(0);
ProbeRS232_RxIntEn();
// turn off the LEDS
IOWR(LED_PIO_BASE,0,0xFF);
printf("BeMicro SDK Lab1: \n");
printf("-----------------\n\n");
// Create the input data waveform
printf("Creating buffer source data\n\n");
for(i = 0; i < DATA_BUFFER_SIZE; i++)
{
source_databuffer[i] = input_data[i%INPUT_LENGTH];
}
// record the value of the high resolution time-stamp timer at the entry and exit points of the software filter
if(alt_timestamp_start() < 0)
{
printf("Please add the high resolution timer to the timestamp timer setting in the syslib properties page.\n");
return 0;
}
printf("Software filter is operating (please be patient)\n");
sw_time_1 = alt_timestamp();
FIR_SW(source_databuffer,
DATA_BUFFER_SIZE,
sw_destination_databuffer,
T,
coefficients[0],
coefficients[1],
coefficients[2],
coefficients[3],
coefficients[4],
coefficients[5],
coefficients[6],
coefficients[7],
DIVIDER_ORDER);
sw_time_2 = alt_timestamp();
printf("Software filter is done\n\n");
sw_proc_time = ((double)(sw_time_2-sw_time_1))/((double)alt_timestamp_freq());
printf("Software processing time was: %f seconds\n\n", sw_proc_time);
printf("Processing time will also be reported by uC-Probe:\n");
return 1;
}
/* ------------------------------------------------------------------------*//**
* @FUNCTION temp_sensor_list_get
* @BRIEF return the list of temperature sensor(s)
* @RETURNS list of temperature sensor(s)
* NULL in case of architecture is not supported
* @DESCRIPTION return the list of temperature sensor(s)
*//*------------------------------------------------------------------------ */
const genlist *temp_sensor_list_get(void)
{
temp_sensor_init();
if (cpu_is_omap44xx()) {
return (const genlist *) &temp_sensor_list;
} else if (cpu_is_omap54xx()) {
return (const genlist *) &temp_sensor_list;
} else {
fprintf(stderr,
"omapconf: %s(): cpu not supported!!!\n", __func__);
return NULL;
}
}
/* ------------------------------------------------------------------------*//**
* @FUNCTION temp_sensor_count_get
* @BRIEF return the number of temperature sensor(s)
* @RETURNS > 0 number of temperature sensor(s)
* OMAPCONF_ERR_CPU
* @DESCRIPTION return the number of temperature sensor(s)
*//*------------------------------------------------------------------------ */
int temp_sensor_count_get(void)
{
int count;
temp_sensor_init();
if (cpu_is_omap44xx()) {
count = genlist_getcount(&temp_sensor_list);
} else if (cpu_is_omap54xx()) {
count = genlist_getcount(&temp_sensor_list);
} else {
fprintf(stderr,
"omapconf: %s(): cpu not supported!!!\n", __func__);
count = OMAPCONF_ERR_CPU;
}
dprintf("%s() = %d\n", __func__, count);
return count;
}
// temperature thread handler
void temp_sensor(void const * arg){
// set the initial Kalman filter state.
KalmanState kstate;
kstate.p = 0.1;
kstate.k = 0.0;
kstate.r = 2.25;
kstate.q = 0.01;
kstate.x = 0.0;
float current_temperature = 0.0;
temp_sensor_init();
while(1){
osSignalWait(TEMP_SENSOR_READY, osWaitForever);
// sample the current temperature of the processor.
current_temperature = kalmanFilter(volt_to_celsius(getADCVoltage()), &kstate);
// send a message to the display thread
send_message(current_temperature, temp_queue);
}
}
