What will be the reason for MDR register not getting updated??

I'm trying I2C while debugging i found that the I2CMDR register is not updating I'm uploading screenshots below.
What will be the reason for MDR register not getting updated??

I'm trying I2C while debugging i found that the I2CMDR register is not updating I'm uploading screenshots below.
I2CMDR register is not getting updated in the peripheral window of the debugger

I was creating a program to communicate with the compass module(HMC5883L) using I2C module using Tiva C LaunchPad (TM4C123GH6PM. When debugging, I found that, when a write value was issued to the I2CMDR...
I2CMDR register is not getting updated in the peripheral window of the debugger

I was creating a program to communicate with the compass module(HMC5883L) using I2C module using Tiva C LaunchPad (TM4C123GH6PM. When debugging, I found that, when a write value was issued to the I2CMDR...
Keil Memory window not updating

Im using LPC1778 to simulate SSP1. The usermanual states that DR for SSP1 is at address 0x40030008. When I transmit data, I immediately receive data into the receive buffer(RNE flag in status register...