/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
int i = 0, j = 0;
int addr;
//usb atjungimo kintamasis
bool usbDisabled = true;
//adc variables
float *result;
char mockResult[600];
char UARTTxPacket[100];
static short ultrasoundPacketTxMultiplier = 0;
static int ULTRASOUND_PACKET_COUNT = 100;
//usart state machine switch
uartSwitch = 'r';
//USB buffer variables
uint8_t buf[255],outstrg[100],inchar;
uint8_t len;
//dac variables
uint16_t waveform[32];
uint8_t continueReading = 1;
uint8_t intCount = 0;
uint8_t charCount = 0;
bool bufferReadSuccessful = false;
char tempString[4];
int cs;
volatile float a,b,elapsedtime,angle,radius,angleinc;
RCC_ClocksTypeDef RCC_Clocks;
// Initialize System and Setup clocks.
SystemInit();
SystemCoreClockUpdate();
//ini ADC
adcConfigure();
//init USART
USARTInit();
USART_puts(USART2, "P_Cmd\n\n");
//USARTSendByte();
//USARTReadByte();
/* SysTick end of count event each 40ms */
RCC_GetClocksFreq(&RCC_Clocks);
//SysTick_Config(RCC_Clocks.HCLK_Frequency /100);
// Initialize FPU
*((volatile unsigned long*)0xE000ED88) = 0xF << 20;
// Initialize LEDs and User_Button on STM32F4-Discovery
STM_EVAL_LEDInit(LED4);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED5);
STM_EVAL_LEDInit(LED6);
if(!usbDisabled){
// USB Device Initialize
USBD_Init(&USB_OTG_dev,
USB_OTG_FS_CORE_ID,
&USR_desc,
&USBD_CDC_cb,
&USR_cb);
// Wait for USB connection goes live
while (!gbUsbDeviceReady);
// Clean USB RX buffer
while(VCP_get_string(&buf[0]) == 0);
// Output signon
printf("USB serial DEMO\r\n");
printf("test\n\r>");
}
// Main loop
while(1) {
//SPI (WITH MSP) STATE MACHINE
if(uartSwitchGet() != 'r')
switch(uartSwitchGet()){
case 't': //cmd tx packet
for (i=0;i<600;i++)
mockResult[i] = i;
for(i=0;i<100;i++)
UARTTxPacket[i] = mockResult[i+ultrasoundPacketTxMultiplier];
txDataArrayToMsp(UARTTxPacket);
uartSwitchSet('r');
break;
case 'e':
//Delay(1000);
USART_puts(USART2, "P_End\n\n");
ultrasoundPacketTxMultiplier = 0;
uartSwitchSet('r');
break;
case 'c': //cmd_packet_received_msg.
ultrasoundPacketTxMultiplier++;
if (ultrasoundPacketTxMultiplier >= 10)
uartSwitchSet('e'); //finish transmission, or...
else
uartSwitchSet('r'); // prepare for the next packet
break;
default:
break;
}
if(!usbDisabled){
//USB COMM STATE MACHINE
inchar = GetCharnw();
if(inchar) {
switch (inchar){
case 'a':
result = adcConvert();
float* k;
uint16_t j;
//for (j=0;j<250;j++){
for(k=result;k<result+10/*28000*/;k++){
printf("%f \n",*k);
}
// }
break;
case 'd':
intCount = charCount = bufferReadSuccessful = 0;
while(continueReading){
for(i=0;i<rxbuflen;i++){
if(inbuf[i]!='d' && inbuf[i]!='e' && inbuf[i]!=' ' && continueReading == true){
tempString[charCount]=inbuf[i];
charCount++;
if(charCount==4){
waveform[intCount] = 0;
for(j=0;j<4;j++)
waveform[intCount] += (int)(tempString[j]-'0')*pow(10,3-j);
intCount++;
charCount = 0;
}
}
if(inbuf[i]=='e'||intCount == 32) { continueReading = 0; bufferReadSuccessful = true;}
}
rxbuflen = 0;
char inchar = GetCharnw();
}
if(bufferReadSuccessful)DAC_SignalsGenerate(&waveform);
break;
case 's':
printf("\n\rF4 Discovery Test V0.55\n\r>");
break;
case 't':
printf("\n\rDo 10000 circular interpolation calculations\n\r");
TimingDelay4 = 10000;
angle = 0.125;
radius = 2.56;
angleinc = 0.0001;
for(i=0; i<100000; i++) {
a = radius * sinf(angle);
b = radius * cosf(angle);
angle += angleinc;
}
elapsedtime = ((float)(10000 - TimingDelay4))/25.0;
printf("timing delay=%d\n\r",TimingDelay4);
printf("Single precision finished in %f seconds or %f usec/loop\n\r",elapsedtime,elapsedtime*10.0);
TimingDelay4 = 10000;
angle = 0.125;
radius = 2.56;
angleinc = 0.0001;
for(i=0; i<100000; i++) {
a = radius * sinfp(angle);
b = radius * cosfp(angle);
angle += angleinc;
}
elapsedtime = ((float)(10000 - TimingDelay4))/25.0;
printf("timing delay=%d\n\r",TimingDelay4);
printf("Single prec fp finished in %f seconds or %f usec/loop\n\r",elapsedtime,elapsedtime*10.0);
TimingDelay4 = 10000;
angle = 0.125;
radius = 2.56;
angleinc = 0.0001;
printf("angle=%f radius=%f angleinc=%f\n\r",angle,radius,angleinc);
for(i=0; i<100000; i++) {
a = radius * sin(angle);
b = radius * cos(angle);
angle += angleinc;
}
printf("timing delay=%d\n\r",TimingDelay4);
elapsedtime = ((float)(10000 - TimingDelay4))/25.0;
printf("Double precision finished in %f seconds or %f usec/loop\n\r>",elapsedtime,elapsedtime*10.0);
break;
case 'f':
printf("f\n\rTry float output: 1.234\n\r");
a = 1.234;
printf("a = %f\n\r",a);
i = 35;
printf("i = %d\n\r",i);
a = 35.45;
printf("a = %f\n\r",a);
printf("a = %f\n\r",12.345);
printf("a = %f\n\r",-12.345);
printf("i = %d\n\r",i);
break;
case 'g':
printf("d\n\rRCC_Clocks.HCLK_Frequency=%ld",RCC_Clocks.HCLK_Frequency);
printf("\n\rDelay 2 second\n\r");
Delay(200);
printf("finished\n\r>");
break;
case CR:
printf("\n\r>");
break;
default:
printf("%c\n\r>",inchar);
break;
}
}
}
if (i == 0x100000) {
STM_EVAL_LEDOff(LED4);
STM_EVAL_LEDOff(LED3);
STM_EVAL_LEDOff(LED5);
STM_EVAL_LEDOff(LED6);
}
if (i++ == 0x200000) {
i = 0;
STM_EVAL_LEDOn(LED4);
STM_EVAL_LEDOn(LED3);
STM_EVAL_LEDOn(LED5);
STM_EVAL_LEDOn(LED6);
}
}
}
void test_adc_init()
{
adcConfigure();
}