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Add an alternate STM32 I2C driver that works around errata in the F103 chip (and maybe others). From Patrizio Simona

This commit is contained in:
Gregory Nutt 2014-05-14 07:48:47 -06:00
parent 59e254d1f6
commit 6018da5181
4 changed files with 2669 additions and 4 deletions
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11
arch/arm/src/stm32/Kconfig
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@ -3052,6 +3052,17 @@ endmenu
menu "I2C Configuration" menu "I2C Configuration"
depends on STM32_I2C depends on STM32_I2C
config STM32_I2C_ALT
bool "Alternate I2C implementation"
default n if !STM32_PERFORMANCELINE
default y if STM32_PERFORMANCELINE
---help---
This selection enables an alternative I2C driver. This alternate
driver implements some rather complex workarounds for errata against
the STM32 F103 "Performance Line". This selection is an option
because: (1) It has not yet been fully verified and (2) It is not
certain that he scope of this workaround is needed only for the F103.
config STM32_I2C_DYNTIMEO config STM32_I2C_DYNTIMEO
bool "Use dynamic timeouts" bool "Use dynamic timeouts"
default n default n

4
arch/arm/src/stm32/Make.defs
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@ -105,11 +105,15 @@ ifeq ($(CONFIG_NUTTX_KERNEL),y)
CHIP_CSRCS += stm32_userspace.c stm32_mpuinit.c CHIP_CSRCS += stm32_userspace.c stm32_mpuinit.c
endif endif
ifeq ($(CONFIG_STM32_I2C_ALT),y)
CHIP_CSRCS += stm32_i2c_alt.c
else
ifeq ($(CONFIG_STM32_STM32F30XX),y) ifeq ($(CONFIG_STM32_STM32F30XX),y)
CHIP_CSRCS += stm32f30xxx_i2c.c CHIP_CSRCS += stm32f30xxx_i2c.c
else else
CHIP_CSRCS += stm32_i2c.c CHIP_CSRCS += stm32_i2c.c
endif endif
endif
ifeq ($(CONFIG_USBDEV),y) ifeq ($(CONFIG_USBDEV),y)
ifeq ($(CONFIG_STM32_USB),y) ifeq ($(CONFIG_STM32_USB),y)

2650
arch/arm/src/stm32/stm32_i2c_alt.c Executable file
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