TMS320F280033: FSM may never exit due to wrong mask when calling Fapi_issueBankEraseCommand

Part Number: TMS320F280033

Hi Team,

There's an issue from the customer need your help:

Mentioned in the manual zhcuao0b Page12

The sample code is as follows:

u32CurrentAddress = Bzero_Sector8_start;
oReturnCheck = Fapi_issueBankEraseCommand((uint32 *)u32CurrentAddress, 0x001F);
// Wait until FSM is done with bank erase operation
while (Fapi_checkFsmForReady() != Fapi_Status_FsmReady)
{
//
// Initialize the Erase Pulses to zero after issuing max pulses
//
if(HWREG(FLASH0CTRL_BASE + FLASH_O_ACC_EP) > MAX_ERASE_PULSE)
{
EALLOW;
//
// Enable Flash Optimization
//
HWREG(FLASH0CTRL_BASE + FLASH_O_OPT) = OPT_ENABLE;
HWREG(FLASH0CTRL_BASE + FLASH_O_ERA_PUL) =
HWREG(FLASH0CTRL_BASE + FLASH_O_ERA_PUL) &
~(uint32_t)FLASH_ERA_PUL_MAX_ERA_PUL_M;
//
// Disable Flash Optimization
//
HWREG(FLASH0CTRL_BASE + FLASH_O_OPT) = OPT_DISABLE;
EDIS;
}
}

The code uses driverlib mode to operate the register.

Several macros used are defined as follows (located in the file flash_programming_f28003x.h):

#define FLASH0CTRL_BASE           0x0005F800U
#define FLASH0ECC_BASE            0x0005FB00U

//
// FMC Registers, Masks and Values
//
#define FLASH_O_ACC_EP           0x148U    // Flash Accumulated Erase Pulses
#define FLASH_O_ERA_PUL          0x136U    // Flash Max Erase Pulses
#define FLASH_O_OPT              0x144U    // Flash Optimization

#define FLASH_ERA_PUL_MAX_ERA_PUL_M      0xFFFU  // Flash Max Erase Pulses Mask
#define OPT_ENABLE                       0x5U    // Flash Optimization Enable
#define OPT_DISABLE                      0x2U    // Flash Optimization Disable
#define MAX_ERASE_PULSE                  0x7D0U  // Flash Max Erase Pulses

FLASH0_CTRL_REGS is defined as follows in the 28003x reference manual sprui33f:

There is no description of registers with offset addresses at the following addresses in the reference manual:

0x148U    // Flash Accumulated Erase Pulses

0x136U    // Flash Max Erase Pulses

0x144U    // Flash Optimization

Where can I see the specific definitions and descriptions of these registers?

How to define these registers without using driverlib? (These registers are not defined in f28003x_flash.h)

struct FLASH_CTRL_REGS {
    union   FRDCNTL_REG                      FRDCNTL;                      // Flash Read Control Register
    Uint16                                   rsvd1[28];                    // Reserved
    union   FBAC_REG                         FBAC;                         // Flash Bank Access Control Register
    union   FBFALLBACK_REG                   FBFALLBACK;                   // Flash Bank Fallback Power Register
    union   FBPRDY_REG                       FBPRDY;                       // Flash Bank Pump Ready Register
    union   FPAC1_REG                        FPAC1;                        // Flash Pump Access Control Register 1
    union   FPAC2_REG                        FPAC2;                        // Flash Pump Access Control Register 2
    Uint16                                   rsvd2[2];                     // Reserved
    union   FMSTAT_REG                       FMSTAT;                       // Flash Module Status Register
    Uint16                                   rsvd3[340];                   // Reserved
    union   FRD_INTF_CTRL_REG                FRD_INTF_CTRL;                // Flash Read Interface Control Register
};

Thanks & Regards,

Ben