the nwewr I2C implmentation on the stm32f042 is wierd triying to figure it out

ked/csl/interfaces/i2c.h

@@ -33,6 +33,9 @@ extern "C" {
 #include "hardwareDescription.h"
 #include "pin.h"
 
+uint32_t i2cCR1;
+uint32_t i2cCR2;
+uint32_t i2cISR;
 
 /*! Enum of possible I2C opperation modes */
 typedef enum{

ked/csl/stm32f042/Src/i2c.c

@@ -35,17 +35,16 @@ void i2cInit(i2c_t *i2cHardware)
 
 	//Configure analog filter. Anlalog filter is on
 	I2C_BASE->CR1 &=~ I2C_CR1_ANFOFF; 
-
-	//Configure the clock
-	I2C_BASE->TIMINGR = i2cHardware->timing; 
 	
 	//Configure NoStrech Streching mode is disabled (slave only) 
 	I2C_BASE->CR1 |= I2C_CR1_NOSTRETCH; 
 
+	//Configure the clock
+	I2C_BASE->TIMINGR = i2cHardware->timing; 
+
 	//Automatic end mode (master mode) Enablede as default 
 	I2C_BASE->CR2 |= I2C_CR2_AUTOEND; 
 
-
 	if(i2cHardware->mode == i2cModeMaster)
 	{
 		if(i2cHardware->addressSize == i2cAddressSizeTenBits)
@@ -61,6 +60,10 @@ void i2cInit(i2c_t *i2cHardware)
 	//activating the Perriferal. 
 	I2C_BASE->CR1 |= I2C_CR1_PE;
 
+	i2cCR1= I2C_BASE->CR1;
+	i2cCR2= I2C_BASE->CR2;
+	i2cISR= I2C_BASE->ISR;
+
 	i2cHardware->state = i2cInitialized;
 }	
 
@@ -113,5 +116,17 @@ void i2cMasterRecieve(i2c_t *i2cHardware, uint8_t devAddress, uint8_t *registerA
 
 	//Wait until the start condition in generated. 
 	while(!(I2C_BASE->ISR & (I2C_ISR_BUSY)));
+	
+	//Check if the TX buffer is empty
+	while(!(I2C_BASE->ISR & (I2C_ISR_TXE)));
+	
+	//write the register that we wahtn to read 	
+	I2C_BASE->TXDR = registerAddress; 
+
+	i2cCR1= I2C_BASE->CR1;
+	i2cCR2= I2C_BASE->CR2;
+	i2cISR= I2C_BASE->ISR;
+	//while(!(I2C_BASE->ISR & (I2C_ISR_RXNE)));
+	//data = I2C_BASE->RXDR;	
 }
 

main.c

@@ -39,13 +39,47 @@ void timer_capture_compare_test(timerNo_t timer)
 }
 
 
+void printBinary32(uint32_t toPrint, uint8_t lsbFirst)
+{
+	int i;
+	char pt; 
+	print_Usart(usart2, "\n\r"); 
+	if(lsbFirst)
+	{
+		print_Usart(usart2, "| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|"); 
+		print_Usart(usart2, "\n\r"); 
+		usartSendChar(usart2, '|'); 
+		for(i=0; i < 32; i++) 
+		{
+			pt = (toPrint >> i) & 1;
+			usartSendChar(usart2, ' '); 
+			usartSendChar(usart2, pt + 0x30); 
+			usartSendChar(usart2, '|'); 
+		}
+	}
+	else
+	{
+		print_Usart(usart2, "|31|30|29|28|27|26|25|24|23|22|21|20|19|18|17|16|15|14|13|12|11|10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0|"); 
+		print_Usart(usart2, "\n\r"); 
+		usartSendChar(usart2, '|'); 
+		for(i=0; i < 32; i++) 
+		{
+			pt = (toPrint >> 31-i) & 1;
+			usartSendChar(usart2, ' '); 
+			usartSendChar(usart2, pt + 0x30); 
+			usartSendChar(usart2, '|'); 
+		}
+	}
+}
+
+
 int main(int argc, char *argv[])
 {
 	
 	uint8_t i = 0;
 	uint8_t slaveAddress = 0xC0; 
 	uint8_t registerToRead = 0x00; 
-	uint8_t charTosend = 0; 
+	uint8_t i2cRecieved = 0; 
 	char buffer [8];
 	// making array with all available timers	
 	//timerNo_t timers[MAX_TIMER_CHANNEL_COUNT] = {timer_1, timer_2, timer_3, timer_14, timer_16, timer_17}; 
@@ -101,22 +135,57 @@ int main(int argc, char *argv[])
 	i2c_1.wakeOn = i2cWakeUpDisabled; 
 	i2c_1.state = i2cNotInitialized; 
 
-	print_Usart(usart2, "I2C init started\n\r"); 
 	i2cInit(&i2c_1);
 	print_Usart(usart2, "I2C initialized\n\r"); 
-	print_Usart(usart2, "I2C_BASE->ISR & I2C_ISR_TXIS : "); 
+
-	i2cMasterRecieve(&i2c_1,slaveAddress,&registerToRead,&charTosend);
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "CR1 : "); 
+	printBinary32(i2cCR1,0);
+	print_Usart(usart2, "\n\r"); 
 	
-	buffer[0] = charTosend>>4; //4 MSB
+	print_Usart(usart2, "\n\r"); 
-	buffer[1] = charTosend& ((1 << 3)); //4 LSB
+	print_Usart(usart2, "CR2 : "); 
+	printBinary32(i2cCR2,0);
+	print_Usart(usart2, "\n\r"); 
+
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "ISR : "); 
+	printBinary32(i2cISR,0);
+	
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "I2C Send Mode\n\r"); 
+
+	i2cMasterRecieve(&i2c_1,slaveAddress,&registerToRead,&i2cRecieved);
+	
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "CR1 : "); 
+	printBinary32(i2cCR1,0);
+	print_Usart(usart2, "\n\r"); 
+	
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "CR2 : "); 
+	printBinary32(i2cCR2,0);
+	print_Usart(usart2, "\n\r"); 
+
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "ISR : "); 
+	printBinary32(i2cISR,0);
+	
+	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "\n\r"); 
+	
+	
+	print_Usart(usart2, "I2C Recieved : "); 
+	buffer[0] = i2cRecieved>>4; //4 MSB
+	buffer[1] = i2cRecieved& ((1 << 3)); //4 LSB
 
 	usartSendChar(usart2, 0x30); 
 	usartSendChar(usart2, 'x'); 
 	usartSendChar(usart2, buffer[0]+0x30); 
 	usartSendChar(usart2, buffer[1]+0x30); 
 	
-	print_Usart(usart2, "\n\r"); 
+	print_Usart(usart2, "\n\r"); 	
-	
 
 	print_Usart(usart2, "All is working fine\n\r");