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stm32: Add hardware PWM support for STM32F1

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This adds hardware PWM support for STM32F1 processors.
This should also work for STM32 F0/F2/F4 processors, but I
don't have one of those to test it.

Signed-off-by: Michael Kurz <michi.kurz@gmail.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Michael Kurz
2021-03-25 20:39:53 +01:00
committed by Kevin O'Connor
parent 39188e1cf3
commit 59c4c49893
5 changed files with 179 additions and 0 deletions
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29
src/stm32/stm32f1.c
View File

@@ -134,6 +134,35 @@ gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup)
stm32f1_alternative_remap(AFIO_MAPR_I2C1_REMAP_Msk,
AFIO_MAPR_I2C1_REMAP);
}
} else if ((gpio == GPIO('A', 15)
|| gpio == GPIO('B', 3)) && (func == 1)) {
// TIM2 CH1/2
stm32f1_alternative_remap(AFIO_MAPR_TIM2_REMAP_PARTIALREMAP1_Msk,
AFIO_MAPR_TIM2_REMAP_PARTIALREMAP1);
} else if ((gpio == GPIO('B', 10)
|| gpio == GPIO('B', 11)) && (func == 1)) {
// TIM2 CH3/4
stm32f1_alternative_remap(AFIO_MAPR_TIM2_REMAP_PARTIALREMAP2_Msk,
AFIO_MAPR_TIM2_REMAP_PARTIALREMAP2);
} else if ((gpio == GPIO('B', 4)
|| gpio == GPIO('B', 5)) && (func == 2)) {
// TIM3 partial remap
stm32f1_alternative_remap(AFIO_MAPR_TIM3_REMAP_PARTIALREMAP_Msk,
AFIO_MAPR_TIM3_REMAP_PARTIALREMAP);
} else if ((gpio == GPIO('C', 6)
|| gpio == GPIO('C', 7)
|| gpio == GPIO('C', 8)
|| gpio == GPIO('C', 9)) && (func == 2)) {
// TIM3 full remap
stm32f1_alternative_remap(AFIO_MAPR_TIM3_REMAP_FULLREMAP_Msk,
AFIO_MAPR_TIM3_REMAP_FULLREMAP);
} else if ((gpio == GPIO('D', 12)
|| gpio == GPIO('D', 13)
|| gpio == GPIO('D', 14)
|| gpio == GPIO('D', 15)) && (func == 2)) {
// TIM4
stm32f1_alternative_remap(AFIO_MAPR_TIM4_REMAP_Msk,
AFIO_MAPR_TIM4_REMAP);
}
// Add more as needed
}