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| author | Randall Spangler <rspangler@chromium.org> | 2013-04-29 11:07:51 -0700 |
|---|---|---|
| committer | ChromeBot <chrome-bot@google.com> | 2013-04-30 14:49:07 -0700 |
| commit | 312b884c42f5f6a6177e416f5b812b1556ac195f (patch) | |
| tree | 70aabd3227bcc84f5c90fe725cc9ef52797e10a7 /chip/stm32/build.mk | |
| parent | 980df549794785ebadd2f4c26323e3f1bf3d3b02 (diff) | |
| download | chrome-ec-312b884c42f5f6a6177e416f5b812b1556ac195f.tar.gz | |
Split STM32 i2c implementation for STM32F vs STM32L
STM32L doesn't need the DMA-based workarounds needed by STM32F, since
the STM32L I2C block isn't broken. DMA adds a lot of code overhead
when transferring 2-3 bytes, and is implemented differently on STM32F
vs STM32L so it doesn't even work on STM32L
Add a simple polled I2C implementation for STM32L. This is not the
final implementation, which will use interrupts, but for now it works,
unlike the DMA-based version.
BUG=chrome-os-partner:18969
BRANCH=none
TEST=i2cscan on pit finds a device at 0x90
Change-Id: Ie2a6c9ac6f62b7fd3c35e313b4015e080d9f937a
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49555
Diffstat (limited to 'chip/stm32/build.mk')
| -rw-r--r-- | chip/stm32/build.mk | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/chip/stm32/build.mk b/chip/stm32/build.mk index b929958a54..b45f6b6929 100644 --- a/chip/stm32/build.mk +++ b/chip/stm32/build.mk @@ -12,7 +12,7 @@ CORE:=cortex-m chip-y=dma.o hwtimer.o system.o uart.o chip-y+=jtag-$(CHIP_VARIANT).o clock-$(CHIP_VARIANT).o gpio-$(CHIP_VARIANT).o chip-$(CONFIG_SPI)+=spi.o -chip-$(CONFIG_I2C)+=i2c.o +chip-$(CONFIG_I2C)+=i2c-$(CHIP_VARIANT).o chip-$(CONFIG_WATCHDOG)+=watchdog.o chip-$(HAS_TASK_KEYSCAN)+=keyboard_raw.o chip-$(HAS_TASK_POWERLED)+=power_led.o |