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Merge pull request #12101 from OTAkeys/pr/fix_i2c_release

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cpu/stm32_common: disable i2c in release
This commit is contained in:
Alexandre Abadie 2020-06-23 10:21:15 +02:00 committed by GitHub
commit 25c609f2d3
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 0 deletions
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8
cpu/stm32/periph/i2c_1.c
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@ -143,6 +143,9 @@ int i2c_acquire(i2c_t dev)
periph_clk_en(i2c_config[dev].bus, i2c_config[dev].rcc_mask); periph_clk_en(i2c_config[dev].bus, i2c_config[dev].rcc_mask);
/* enable device */
i2c_config[dev].dev->CR1 |= I2C_CR1_PE;
return 0; return 0;
} }
@ -150,6 +153,11 @@ void i2c_release(i2c_t dev)
{ {
assert(dev < I2C_NUMOF); assert(dev < I2C_NUMOF);
/* disable device */
i2c_config[dev].dev->CR1 &= ~(I2C_CR1_PE);
_wait_for_bus(i2c_config[dev].dev);
periph_clk_dis(i2c_config[dev].bus, i2c_config[dev].rcc_mask); periph_clk_dis(i2c_config[dev].bus, i2c_config[dev].rcc_mask);
mutex_unlock(&locks[dev]); mutex_unlock(&locks[dev]);

8
cpu/stm32/periph/i2c_2.c
View File

@ -193,6 +193,9 @@ int i2c_acquire(i2c_t dev)
periph_clk_en(i2c_config[dev].bus, i2c_config[dev].rcc_mask); periph_clk_en(i2c_config[dev].bus, i2c_config[dev].rcc_mask);
/* enable device */
i2c_config[dev].dev->CR1 |= I2C_CR1_PE;
return 0; return 0;
} }
@ -200,6 +203,11 @@ void i2c_release(i2c_t dev)
{ {
assert(dev < I2C_NUMOF); assert(dev < I2C_NUMOF);
/* disable device */
i2c_config[dev].dev->CR1 &= ~(I2C_CR1_PE);
_wait_for_bus(i2c_config[dev].dev);
periph_clk_dis(i2c_config[dev].bus, i2c_config[dev].rcc_mask); periph_clk_dis(i2c_config[dev].bus, i2c_config[dev].rcc_mask);
#ifdef STM32_PM_STOP #ifdef STM32_PM_STOP