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authorMarti Bolivar <mbolivar@leaflabs.com>2012-06-21 16:30:16 -0400
committerMarti Bolivar <mbolivar@leaflabs.com>2012-06-22 14:06:10 -0400
commit9ba028ef647bc033e5ec078acd7de9d5c28432a9 (patch)
treefad6606c51781141f82bd5e348e1e2236d360c19 /libmaple/stm32f1
parentfe34ca70469f1bd88eb38feb2b0b336ef5b07ff8 (diff)
downloadlibrambutan-9ba028ef647bc033e5ec078acd7de9d5c28432a9.tar.gz
librambutan-9ba028ef647bc033e5ec078acd7de9d5c28432a9.zip
STM32F1: i2c_config_gpios(): Do afio_remap() if we should.
This should help avoid surprising some users. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'libmaple/stm32f1')
-rw-r--r--libmaple/stm32f1/i2c.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libmaple/stm32f1/i2c.c b/libmaple/stm32f1/i2c.c
index 4c9af30..5797940 100644
--- a/libmaple/stm32f1/i2c.c
+++ b/libmaple/stm32f1/i2c.c
@@ -44,6 +44,10 @@ i2c_dev* const I2C2 = &i2c2;
*/
void i2c_config_gpios(const i2c_dev *dev) {
+ if ((dev->clk_id == RCC_I2C1) &&
+ (dev->sda_pin == 9) && (dev->scl_pin == 8)) {
+ afio_remap(AFIO_REMAP_I2C1);
+ }
gpio_set_mode(dev->gpio_port, dev->sda_pin, GPIO_AF_OUTPUT_OD);
gpio_set_mode(dev->gpio_port, dev->scl_pin, GPIO_AF_OUTPUT_OD);
}