TM4C123GH6PGE: Facing issue while programming

Hi,

  I can't see your image. Can you please upload? You can just drag your image into the editing window.

  Please provide some information.

  - Are you using a bootloader to download your firmware?

  - Are you using the ROM-based bootloader or the flash-based bootloader?

  - Which UARTx are you using? Please note that if you use ROM-based bootloader, it will only work with UART0. If you want to UART1 or UART2 or so forth, you must use the flash-based bootloader.

  - If you are using the flash-based bootloader, did you change the below #define in the bl_config.h according to the UART instance you want to use?

//*****************************************************************************
//
// Selects the clock enable for the UART peripheral module
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UARTx_BASE
//
//*****************************************************************************
#define UART_CLOCK_ENABLE     SYSCTL_RCGCUART_R0

//*****************************************************************************
//
// Selects the base address of the UART peripheral module
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_CLOCK_ENABLE
//
//*****************************************************************************
#define UARTx_BASE     UART0_BASE

//*****************************************************************************
//
// Selects the clock enable for the GPIO corresponding to UART RX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_RXPIN_BASE, UART_RXPIN_PCTL and UART_RXPIN_POS
//
//*****************************************************************************
#define UART_RXPIN_CLOCK_ENABLE     SYSCTL_RCGCGPIO_R0

//*****************************************************************************
//
// Selects the base address for the GPIO corresponding to UART RX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_RXPIN_CLOCK_ENABLE, UART_RXPIN_PCTL and UART_RXPIN_POS
//
//*****************************************************************************
#define UART_RXPIN_BASE     GPIO_PORTA_BASE

//*****************************************************************************
//
// Selects the port control value for the GPIO corresponding to UART RX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_RXPIN_CLOCK_ENABLE, UART_RXPIN_BASE and UART_RXPIN_POS
//
//*****************************************************************************
#define UART_RXPIN_PCTL     0x1

//*****************************************************************************
//
// Selects the pin number for the GPIO corresponding to UART RX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_RXPIN_CLOCK_ENABLE, UART_RXPIN_BASE and UART_RXPIN_PCTL
//
//*****************************************************************************
#define UART_RXPIN_POS     0

//*****************************************************************************
//
// Selects the clock enable for the GPIO corresponding to UART TX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_TXPIN_BASE, UART_TXPIN_PCTL and UART_TXPIN_POS
//
//*****************************************************************************
#define UART_TXPIN_CLOCK_ENABLE     SYSCTL_RCGCGPIO_R0

//*****************************************************************************
//
// Selects the base address for the GPIO corresponding to UART TX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_TXPIN_CLOCK_ENABLE, UART_TXPIN_PCTL and UART_TXPIN_POS
//
//*****************************************************************************
#define UART_TXPIN_BASE     GPIO_PORTA_BASE

//*****************************************************************************
//
// Selects the port control value for the GPIO corresponding to UART TX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_TXPIN_CLOCK_ENABLE, UART_TXPIN_BASE and UART_TXPIN_POS
//
//*****************************************************************************
#define UART_TXPIN_PCTL     0x1

//*****************************************************************************
//
// Selects the pin number for the GPIO corresponding to UART TX pin
//
// Depends on: UART_ENABLE_UPDATE
// Exclusive of: None
// Requires: UART_TXPIN_CLOCK_ENABLE, UART_TXPIN_BASE and UART_TXPIN_PCTL
//
//*****************************************************************************
#define UART_TXPIN_POS     1

   - To make sure there is nothing wrong with your USB to UART adapter, can you use the boot_serial (the bootloader) and boot_demo1 (the demo application) on UART0 for your custom board? The boot_serial and boot_demo1 should work out of the box on UART0 without any modification. 

  - What is your UART setting? Below is mine. My COM port will be different from yours.