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OVMS3-idf/examples/peripherals/spi_master/hd_eeprom/main/Kconfig.projbuild

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spi: add eeprom example
2019-12-25 09:32:12 +00:00
menu "Example Configuration"
config EXAMPLE_USE_SPI1_PINS
spi: fix config break and reduce overhead of the bus lock on SPI1 The SPI bus lock on SPI1 introduces two side effects: 1. The device lock for the main flash requires the `CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION` to be selected, however this option is disabled by default in earlier IDF versions. Some developers may find their project cannot be built by their old sdkconfig files. 2. Usually we don't need the lock on the SPI1 bus, due to it's restrictions. However the overhead still exists in this case, the IRAM cost for static version of semaphore functions, and the time cost when getting and releasing the lock. This commit: 1. Add a CONFIG_SPI_FLASH_BYPASS_MAIN_LOCK option, which will forbid the space cost, as well as the initialization of the main bus lock. 2. When the option is not selected, the bus lock is used, the `CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION` will be selected explicitly. 3. Revert default value of `CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION` to `n`. introduced in 49a48644e42458366b2dd7b7d153acc943d50e0f. Closes https://github.com/espressif/esp-idf/issues/5046
2020-04-09 05:30:12 +00:00
bool "The example uses SPI1 shared pins for EEPROM connection"
spi: add eeprom example
2019-12-25 09:32:12 +00:00
default n
spi: fix config break and reduce overhead of the bus lock on SPI1 The SPI bus lock on SPI1 introduces two side effects: 1. The device lock for the main flash requires the `CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION` to be selected, however this option is disabled by default in earlier IDF versions. Some developers may find their project cannot be built by their old sdkconfig files. 2. Usually we don't need the lock on the SPI1 bus, due to it's restrictions. However the overhead still exists in this case, the IRAM cost for static version of semaphore functions, and the time cost when getting and releasing the lock. This commit: 1. Add a CONFIG_SPI_FLASH_BYPASS_MAIN_LOCK option, which will forbid the space cost, as well as the initialization of the main bus lock. 2. When the option is not selected, the bus lock is used, the `CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION` will be selected explicitly. 3. Revert default value of `CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION` to `n`. introduced in 49a48644e42458366b2dd7b7d153acc943d50e0f. Closes https://github.com/espressif/esp-idf/issues/5046
2020-04-09 05:30:12 +00:00
depends on SPI_FLASH_SHARE_SPI1_BUS
spi: add eeprom example
2019-12-25 09:32:12 +00:00
help
Enable this option will make the EEPROM use SPI1 pins, which is shared with the main
flash chip.
Currently this example hasn't supported SPI1 pins on other chips yet.
config EXAMPLE_INTR_USED
bool "Use the interrupt to detect the eeprom busy"
default y
depends on !EXAMPLE_USE_SPI1_PINS
help
Enable this option will allow the example to be blocked while the EEPROM is working
in progress, and unblocked by GPIO interrupt. Otherwise the example will keep polling
until the EEPROM is idle.
config EXAMPLE_5V_COMMANDS
bool "The EEPROM is supplied by 5V power"
default n
help
The Erase_All and Write_All commands of EEPROM are only supported when EEPROM is
supplied by 5V power. Enable this to use those two commands.
But please note that ESP chips don't support 5V IO, you need to add external
level-shifting circuits between ESP chip to the EEPROM.
endmenu
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