About bin format image output question for stm32

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About bin format image output question for stm32

reille
Hi!

Now, I meet a strange question on stm32 platform. If i set CYGNUM_DEVS_SPI_CORTEXM_STM32_BUS1_BBUF_SIZE to 256 for stm32 spi driver, bin format image converted from elf format image is abnormal, its size become to 4KB. But i set CYGNUM_DEVS_SPI_CORTEXM_STM32_BUS1_BBUF_SIZE to 0, bin format image is normal and run OK.

By reading spi_stm32.c,  i find the following code:

#if (CYGNUM_DEVS_SPI_CORTEXM_STM32_BUS1_BBUF_SIZE > 0)
static cyg_uint8 bus1_tx_bbuf [CYGNUM_DEVS_SPI_CORTEXM_STM32_BUS1_BBUF_SIZE]
  __attribute__((aligned (2), section (".sram"))) = { 0 };
static cyg_uint8 bus1_rx_bbuf [CYGNUM_DEVS_SPI_CORTEXM_STM32_BUS1_BBUF_SIZE]
  __attribute__((aligned (2), section (".sram"))) = { 0 };
#endif

I think that the code cause that can't convert the elf format image to bin format image normally. But why? and How to solve???

thinks!

reille