djsundog
/
circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
circuitpython/ports/stm32/dma.h

111 lines
4.2 KiB
C
Raw Normal View History

stmhal: Factor out DMA initialisation code from spi.c. This is so that the DMA can be shared by multiple peripherals.
2015-06-10 08:06:48 -04:00
/*
all: Use the name MicroPython consistently in comments There were several different spellings of MicroPython present in comments, when there should be only one.
2017-06-30 03:22:17 -04:00
* This file is part of the MicroPython project, http://micropython.org/
stmhal: Factor out DMA initialisation code from spi.c. This is so that the DMA can be shared by multiple peripherals.
2015-06-10 08:06:48 -04:00
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
stm32: Change header include guards from STMHAL to STM32 to match dir.
2018-02-14 23:47:04 -05:00
#ifndef MICROPY_INCLUDED_STM32_DMA_H
#define MICROPY_INCLUDED_STM32_DMA_H
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
typedef struct _dma_descr_t dma_descr_t;
stm32: Add support for STM32F0 MCUs.
2018-05-28 04:10:53 -04:00
#if defined(STM32F0) || defined(STM32F4) || defined(STM32F7) || defined(STM32H7)
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_I2C_1_RX;
extern const dma_descr_t dma_SPI_3_RX;
stmhal/i2c: Add support for I2C4 hardware block on F7 MCUs.
2016-11-24 19:21:18 -05:00
extern const dma_descr_t dma_I2C_4_RX;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_I2C_3_RX;
extern const dma_descr_t dma_I2C_2_RX;
extern const dma_descr_t dma_SPI_2_RX;
extern const dma_descr_t dma_SPI_2_TX;
extern const dma_descr_t dma_I2C_3_TX;
stmhal/i2c: Add support for I2C4 hardware block on F7 MCUs.
2016-11-24 19:21:18 -05:00
extern const dma_descr_t dma_I2C_4_TX;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_DAC_1_TX;
extern const dma_descr_t dma_DAC_2_TX;
extern const dma_descr_t dma_SPI_3_TX;
extern const dma_descr_t dma_I2C_1_TX;
extern const dma_descr_t dma_I2C_2_TX;
stm32/sdcard: Use only a single DMA stream for both SDIO TX/RX. No need to be wasteful on DMA resources.
2018-09-11 03:20:34 -04:00
extern const dma_descr_t dma_SDMMC_2;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_SPI_1_RX;
extern const dma_descr_t dma_SPI_5_RX;
stm32/sdcard: Use only a single DMA stream for both SDIO TX/RX. No need to be wasteful on DMA resources.
2018-09-11 03:20:34 -04:00
extern const dma_descr_t dma_SDIO_0;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_SPI_4_RX;
extern const dma_descr_t dma_SPI_5_TX;
extern const dma_descr_t dma_SPI_4_TX;
extern const dma_descr_t dma_SPI_6_TX;
extern const dma_descr_t dma_SPI_1_TX;
stm32/sdcard: Use only a single DMA stream for both SDIO TX/RX. No need to be wasteful on DMA resources.
2018-09-11 03:20:34 -04:00
extern const dma_descr_t dma_SDMMC_2;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_SPI_6_RX;
stm32/sdcard: Use only a single DMA stream for both SDIO TX/RX. No need to be wasteful on DMA resources.
2018-09-11 03:20:34 -04:00
extern const dma_descr_t dma_SDIO_0;
stm32/dcmi: Add F4/F7/H7 hal files and dma definitions for DCMI periph.
2018-09-16 23:47:54 -04:00
extern const dma_descr_t dma_DCMI_0;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
stm32: Add initial support for STM32L0xx MCUs.
2019-07-05 03:24:59 -04:00
#elif defined(STM32L0)
extern const dma_descr_t dma_SPI_1_RX;
extern const dma_descr_t dma_I2C_3_TX;
extern const dma_descr_t dma_SPI_1_TX;
extern const dma_descr_t dma_I2C_3_RX;
extern const dma_descr_t dma_DAC_1_TX;
extern const dma_descr_t dma_SPI_2_RX;
extern const dma_descr_t dma_I2C_2_TX;
extern const dma_descr_t dma_DAC_2_TX;
extern const dma_descr_t dma_SPI_2_TX;
extern const dma_descr_t dma_I2C_2_RX;
extern const dma_descr_t dma_I2C_1_TX;
extern const dma_descr_t dma_I2C_1_RX;
stm32: Add initial support for STM32WBxx MCUs. This new series of MCUs is similar to the L4 series with an additional Cortex-M0 coprocessor. The firmware for the wireless stack must be managed separately and MicroPython does not currently interface to it. Supported features so far include: RTC, UART, USB, internal flash filesystem.
2019-07-17 02:33:31 -04:00
#elif defined(STM32L4) || defined(STM32WB)
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
extern const dma_descr_t dma_ADC_1_RX;
extern const dma_descr_t dma_ADC_2_RX;
extern const dma_descr_t dma_SPI_1_RX;
extern const dma_descr_t dma_I2C_3_TX;
extern const dma_descr_t dma_ADC_3_RX;
extern const dma_descr_t dma_SPI_1_TX;
extern const dma_descr_t dma_I2C_3_RX;
extern const dma_descr_t dma_DAC_1_TX;
extern const dma_descr_t dma_SPI_2_RX;
extern const dma_descr_t dma_I2C_2_TX;
extern const dma_descr_t dma_DAC_2_TX;
extern const dma_descr_t dma_SPI_2_TX;
extern const dma_descr_t dma_I2C_2_RX;
extern const dma_descr_t dma_I2C_1_TX;
extern const dma_descr_t dma_I2C_1_RX;
extern const dma_descr_t dma_SPI_3_RX;
extern const dma_descr_t dma_SPI_3_TX;
stm32/sdcard: Use only a single DMA stream for both SDIO TX/RX. No need to be wasteful on DMA resources.
2018-09-11 03:20:34 -04:00
extern const dma_descr_t dma_SDIO_0;
stm32: Add support for STM32L452 MCUs.
2019-05-20 08:00:41 -04:00
extern const dma_descr_t dma_I2C_4_TX;
extern const dma_descr_t dma_I2C_4_RX;
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
#endif
stmhal: Turn off DMA clocks when idle for 100 msec Turning on each DMA block increases the current consumption by about 8 mA. This code adds an idle timer for each DMA block and turns off the clocks when no streams are in use for 128 msec. Having a small timeout allows for improved performance when back-to-back transfers are being performed. The 128 msec is basically a guess.
2015-11-15 20:02:43 -05:00
stm32/dma: Pass DMA direction as parameter to dma_init not in cfg struct Some DMA channels (eg for SDIO) can be used in both directions and this patch allows such peripherals to dynamically select the DMA direction.
2018-09-11 03:18:06 -04:00
void dma_init(DMA_HandleTypeDef *dma, const dma_descr_t *dma_descr, uint32_t dir, void *data);
void dma_init_handle(DMA_HandleTypeDef *dma, const dma_descr_t *dma_descr, uint32_t dir, void *data);
stmhal: L4: Adapt DMA to be able to support STM32L4 MCU series. The main thing is to change the DMA code in a way that the structure DMA_Stream_TypeDef (which is similar to DMA_Channel_TypeDef on stm32l4) is no longer used outside of dma.c, as this structure only exists for the F4 series. Therefore I introduced a new structure (dma_descr_t) which handles all DMA specific stuff for configuration. Further the periphery (spi, i2c, sdcard, dac) does not need to know the internals of the dma.
2016-03-22 06:28:35 -04:00
void dma_deinit(const dma_descr_t *dma_descr);
void dma_invalidate_channel(const dma_descr_t *dma_descr);
stm32/dac: Rework DAC driver to use direct register access. This patch makes the DAC driver simpler and removes the need for the ST HAL. As part of it, new helper functions are added to the DMA driver, which also use direct register access instead of the ST HAL. Main changes to the DAC interface are: - The DAC uPy object is no longer allocated dynamically on the heap, rather it's statically allocated and the same object is retrieved for subsequent uses of pyb.DAC(<id>). This allows to access the DAC objects without resetting the DAC peripheral. It also means that the DAC is only reset if explicitly passed initialisation parameters, like "bits" or "buffering". - The DAC.noise() and DAC.triangle() methods now output a signal which is full scale (previously it was a fraction of the full output voltage). - The DAC.write_timed() method is fixed so that it continues in the background when another peripheral (eg SPI) uses the DMA (previously the DAC would stop if another peripheral finished with the DMA and shut the DMA peripheral off completely). Based on the above, the following backwards incompatibilities are introduced: - pyb.DAC(id) will now only reset the DAC the first time it is called, whereas previously each call to create a DAC object would reset the DAC. To get the old behaviour pass the bits parameter like: pyb.DAC(id, bits). - DAC.noise() and DAC.triangle() are now full scale. To get previous behaviour (to change the amplitude and offset) write to the DAC_CR (MAMP bits) and DAC_DHR12Rx registers manually.
2019-04-24 01:51:19 -04:00
void dma_nohal_init(const dma_descr_t *descr, uint32_t config);
void dma_nohal_deinit(const dma_descr_t *descr);
void dma_nohal_start(const dma_descr_t *descr, uint32_t src_addr, uint32_t dst_addr, uint16_t len);
stm32: Change header include guards from STMHAL to STM32 to match dir.
2018-02-14 23:47:04 -05:00
#endif // MICROPY_INCLUDED_STM32_DMA_H