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configure_alarm.c
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configure_alarm.c
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/**
* Alarm program for the course "Programming embedded systems"
*/
#include <stdio.h>
#include "FreeRTOS.h"
#include "task.h"
//#include "semphr.h"
//#include "queue.h"
#include "setup.h"
//#include "assert.h"
#include "GLCD.h"
//#include "stm3210c_eval_ioe.h"
//#include "stm32f10x_gpio.h"
//#include "global.h"
#include "screen.h"
//#include "screen_test.h"
//#include "alarm.h"
//#include "alarm_test.h"
//#include "master_alarm.h"
#include "configure_alarm.h"
#include "i2c_ee.h"
/* Private variables ---------------------------------------------------------*/
uint8_t Tx1_Buffer[BufferSize+1];
uint8_t Rx1_Buffer[BufferSize];
uint8_t Buffer[BufferSize];
uint8_t flag[1];
volatile TestStatus TransferStatus = FAILED;
/*-----------------------------------------------------------*/
/**
* @brief Compares two buffers.
* @param pBuffer1, pBuffer2: buffers to be compared.
* @param BufferLength: buffer's length
* @retval PASSED: pBuffer1 identical to pBuffer2
* FAILED: pBuffer1 differs from pBuffer2
*/
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
{
while(BufferLength--)
{
if(*pBuffer1 != *pBuffer2)
{
return FAILED;
}
pBuffer1++;
pBuffer2++;
}
return PASSED;
}
void AssignBuffer(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
{
while(BufferLength--)
{
*pBuffer1 = *pBuffer2;
pBuffer1++;
pBuffer2++;
}
}
void Int2Buf(int number, uint8_t* pBuffer)
{
pBuffer[3]=number/1000;
pBuffer[2]=(number/100)%10;
pBuffer[1]=(number/10)%10;
pBuffer[0]=number%10;
}
/*-----------------------------------------------------------*/
/**
* Main configuration routine - called from master_alarm
*
*/
void configureAlarm(void) {
//configure - and store alarm values, like secret code
//statusReturn used for temporary response from other routines
int statusReturn;
unsigned char menuText0[] = "Configuration code:\0";
unsigned char menuText1[] = "Secret code:\0";
unsigned char menuText2[] = "Signal delay:\0";
unsigned char message0[] = "Wrong code!\0";
unsigned char message1[] = "Changes not allowed\0";
/* Read from I2C EEPROM from 0x49 */
I2C_EE_BufferRead(flag, 0x49, 1);
/* No flag at the beginning */
if(flag[0]!=0 && flag[0]!=1)
{
/* No secret code at the beginning */
flag[0]=0;
/* Write flag number on I2C EEPROM */
I2C_EE_BufferWrite(flag, 0x49, 1);
}
/* If there is no secret code in EEPROM */
if(flag[0]==0)
{
//ask for secret code
statusReturn = screenQueryNumber(Blue, menuText1, 8);
// integer to buffer
Int2Buf (statusReturn, Buffer);
AssignBuffer(Tx1_Buffer, Buffer, BufferSize);
/* Write on I2C EEPROM from EEPROM_WriteAddress */
I2C_EE_BufferWrite(Tx1_Buffer, EEPROM_WriteAddress, BufferSize);
//ask about allowed waiting time
statusReturn = screenQueryNumber(Blue, menuText2, 3);
//check, max 256 seconds (240 - 4 minutes should be enough)
/* secret code has been set */
flag[0]=1;
I2C_EE_BufferWrite(flag, 0x49, 1);
}
/* If secret code has been set */
else if(flag[0]==1)
{
//check to see the user is allowed to change things
statusReturn = screenQueryNumber(Blue, menuText0, 4);
//code hardcoded now, better if stored
// integer to buffer
Int2Buf (statusReturn, Buffer);
/* Read from I2C EEPROM from EEPROM_ReadAddress */
I2C_EE_BufferRead(Rx1_Buffer, EEPROM_ReadAddress, BufferSize);
/* Check if the data written to the memory is read correctly */
TransferStatus = Buffercmp(Buffer, Rx1_Buffer, BufferSize);
if(TransferStatus)
{
//ok, allowed
//ask for secret code
statusReturn = screenQueryNumber(Blue, menuText1, 8);
// integer to buffer
Int2Buf (statusReturn, Buffer);
AssignBuffer(Tx1_Buffer, Buffer, BufferSize);
/* Write on I2C EEPROM from EEPROM_WriteAddress */
I2C_EE_BufferWrite(Tx1_Buffer, EEPROM_WriteAddress, BufferSize);
//ask about allowed waiting time
statusReturn = screenQueryNumber(Blue, menuText2, 3);
//check, max 256 seconds (240 - 4 minutes should be enough)
flag[0]=1;
I2C_EE_BufferWrite(flag, 0x49, 1);
}
else
{
//wrong code
screenClear();
screenOutputTextLine(Red, Line3, message0);
screenOutputTextLine(Red, Line4, message1);
vTaskDelay(900 / portTICK_RATE_MS);
}
}
}
/*-----------------------------------------------------------*/