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stm32/spi: Provide better separation between SPI driver and uPy objs.

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There is an underlying hardware SPI driver (built on top of the STM HAL)
and then on top of this sits the legacy pyb.SPI class as well as the
machine.SPI class.  This patch improves the separation between these
layers, in particular decoupling machine.SPI from pyb.SPI.
This commit is contained in:
Damien George
2018-02-05 13:44:31 +11:00
parent 253f2bd7be
commit 4ad3ede21a
2 changed files with 81 additions and 64 deletions
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15
ports/stm32/spi.h
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@@ -26,18 +26,29 @@
#ifndef MICROPY_INCLUDED_STMHAL_SPI_H
#define MICROPY_INCLUDED_STMHAL_SPI_H
#include "dma.h"
typedef struct _spi_t {
SPI_HandleTypeDef *spi;
const dma_descr_t *tx_dma_descr;
const dma_descr_t *rx_dma_descr;
} spi_t;
extern SPI_HandleTypeDef SPIHandle1;
extern SPI_HandleTypeDef SPIHandle2;
extern SPI_HandleTypeDef SPIHandle3;
extern SPI_HandleTypeDef SPIHandle4;
extern SPI_HandleTypeDef SPIHandle5;
extern SPI_HandleTypeDef SPIHandle6;
extern const spi_t spi_obj[6];
extern const mp_obj_type_t pyb_spi_type;
extern const mp_obj_type_t machine_soft_spi_type;
extern const mp_obj_type_t machine_hard_spi_type;
void spi_init0(void);
void spi_init(SPI_HandleTypeDef *spi, bool enable_nss_pin);
SPI_HandleTypeDef *spi_get_handle(mp_obj_t o);
void spi_init(const spi_t *spi, bool enable_nss_pin);
const spi_t *spi_from_mp_obj(mp_obj_t o);
#endif // MICROPY_INCLUDED_STMHAL_SPI_H