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There are two schemes for accessing the packet buffer area (PMA) from the CPU: - 2 x 16 bit/word access scheme where two 16-bit half-words per word can be accessed. With this scheme the access can be half-word aligned and the PMA address offset corresponds therefore to the local USB IP address. The size of the PMA SRAM is usually 1024 byte. - 1 x 16 bit/word access scheme where one 16-bit half word per word can be accessed. With this scheme the access can only be word-aligned and the PMA address offset to a half-word is therefore twice the local USB IP address. The size of the PMA SRAM is usually 512 byte. Which access scheme is used depends on the STM32 model. |
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| .. | ||
| bootloader | ||
| dist | ||
| include | ||
| kconfigs | ||
| ldscripts | ||
| periph | ||
| stmclk | ||
| vectors | ||
| cpu_common.c | ||
| cpu_init.c | ||
| doc.txt | ||
| Kconfig | ||
| Makefile | ||
| Makefile.cmsis | ||
| Makefile.default | ||
| Makefile.dep | ||
| Makefile.features | ||
| Makefile.include | ||
| stm32_info.mk | ||
| stm32_line.mk | ||
| stm32_mem_lengths.mk | ||
| stm32_riotboot.mk | ||
| stm32.config | ||