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| author | Marti Bolivar <mbolivar@leaflabs.com> | 2012-06-21 16:04:18 -0400 |
|---|---|---|
| committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-06-22 14:06:10 -0400 |
| commit | 4d133982271fd063779174d1695e14c7821c6da6 (patch) | |
| tree | c08584759d953e6e1eed61d6af540a57903388d4 /libmaple/i2c.c | |
| parent | 70f22b667a7d91c68d663c1bf9ef1c0bdcbdd377 (diff) | |
| download | librambutan-4d133982271fd063779174d1695e14c7821c6da6.tar.gz librambutan-4d133982271fd063779174d1695e14c7821c6da6.zip | |
I2C: Deprecate I2C_REMAP flag.
This is ad-hoc and nonportable. If you really want I2C mapped
elsewhere, then mess with the I2C device fields and call afio_remap()
yourself. (This is also cleaner for F2).
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'libmaple/i2c.c')
| -rw-r--r-- | libmaple/i2c.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/libmaple/i2c.c b/libmaple/i2c.c index 291bf16..d2447a4 100644 --- a/libmaple/i2c.c +++ b/libmaple/i2c.c @@ -153,6 +153,11 @@ void i2c_init(i2c_dev *dev) { rcc_clk_enable(dev->clk_id); } +/* Hack for deprecated bit of STM32F1 functionality */ +#ifndef _I2C_HAVE_DEPRECATED_I2C_REMAP +#define _i2c_handle_remap(dev, flags) ((void)0) +#endif + /** * @brief Initialize an I2C device as bus master * @param dev Device to enable @@ -163,7 +168,8 @@ void i2c_init(i2c_dev *dev) { * I2C_BUS_RESET: Reset the bus and clock out any hung slaves on * initialization, * I2C_10BIT_ADDRESSING: Enable 10-bit addressing, - * I2C_REMAP: Remap I2C1 to SCL/PB8 SDA/PB9. + * I2C_REMAP: (deprecated, STM32F1 only) Remap I2C1 to SCL/PB8 + * SDA/PB9. */ void i2c_master_enable(i2c_dev *dev, uint32 flags) { #define I2C_CLK (STM32_PCLK1/1000000) @@ -173,11 +179,8 @@ void i2c_master_enable(i2c_dev *dev, uint32 flags) { /* PE must be disabled to configure the device */ ASSERT(!(dev->regs->CR1 & I2C_CR1_PE)); - if ((dev == I2C1) && (flags & I2C_REMAP)) { - afio_remap(AFIO_REMAP_I2C1); - I2C1->sda_pin = 9; - I2C1->scl_pin = 8; - } + /* Ugh */ + _i2c_handle_remap(dev, flags); /* Reset the bus. Clock out any hung slaves. */ if (flags & I2C_BUS_RESET) { |