Difference between revisions of "Dev/STM32I2C"
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This page is a work document about STM32 driver | This page is a work document about STM32 I2C driver | ||
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[http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/ERRATA_SHEET/CD00197763.pdf STM32F101xC/D/E and STM32F103xC/D/E Errata sheet] | [http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/ERRATA_SHEET/CD00197763.pdf STM32F101xC/D/E and STM32F103xC/D/E Errata sheet] | ||
[http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/REFERENCE_MANUAL/CD00171190.pdf RM0008 Reference manual] | [http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/REFERENCE_MANUAL/CD00171190.pdf RM0008 Reference manual] ( page 726 ) | ||
== Problem == | |||
We're implementing a "Master" driver. | |||
The I2C peripheral on STM32 is very "timing sensitive". | |||
It has been experienced that we can not rely on "events" like described in the reference manual and need to implement our own state machine in order to be able to deal with the timing sensitivity of the hardware. | |||
== Goals == | |||
-1 never crash the MCU | |||
-2 never crash the peripheral | |||
-3 never provide corrupted data | |||
-4 get as few failed transferts as possible | |||
Latest revision as of 03:12, 15 April 2011
This page is a work document about STM32 I2C driver
Documentation
STM32F10xxx Cortex-M3 programming manual
STM32F101xC/D/E and STM32F103xC/D/E Errata sheet
RM0008 Reference manual ( page 726 )
Problem
We're implementing a "Master" driver.
The I2C peripheral on STM32 is very "timing sensitive".
It has been experienced that we can not rely on "events" like described in the reference manual and need to implement our own state machine in order to be able to deal with the timing sensitivity of the hardware.
Goals
-1 never crash the MCU -2 never crash the peripheral -3 never provide corrupted data -4 get as few failed transferts as possible