mirror of
https://github.com/betaflight/betaflight.git
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82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* This file is part of Cleanflight.
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*
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* Cleanflight is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Cleanflight is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Cleanflight. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "io_types.h"
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#include "rcc_types.h"
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#if defined(STM32F4) || defined(STM32F3)
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#define SPI_IO_AF_CFG IO_CONFIG(GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_PP, GPIO_PuPd_NOPULL)
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#define SPI_IO_AF_SCK_CFG IO_CONFIG(GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_PP, GPIO_PuPd_DOWN)
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#define SPI_IO_AF_MISO_CFG IO_CONFIG(GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_PP, GPIO_PuPd_UP)
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#define SPI_IO_CS_CFG IO_CONFIG(GPIO_Mode_OUT, GPIO_Speed_50MHz, GPIO_OType_PP, GPIO_PuPd_NOPULL)
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#elif defined(STM32F1)
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#define SPI_IO_AF_SCK_CFG IO_CONFIG(GPIO_Mode_AF_PP, GPIO_Speed_50MHz)
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#define SPI_IO_AF_MOSI_CFG IO_CONFIG(GPIO_Mode_AF_PP, GPIO_Speed_50MHz)
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#define SPI_IO_AF_MISO_CFG IO_CONFIG(GPIO_Mode_IN_FLOATING, GPIO_Speed_50MHz)
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#define SPI_IO_CS_CFG IO_CONFIG(GPIO_Mode_Out_PP, GPIO_Speed_50MHz)
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#endif
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/*
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Flash M25p16 tolerates 20mhz, SPI_CLOCK_FAST should sit around 20 or less.
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*/
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typedef enum {
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SPI_CLOCK_INITIALIZATON = 256,
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#if defined(STM32F4)
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SPI_CLOCK_SLOW = 128, //00.65625 MHz
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SPI_CLOCK_STANDARD = 8, //10.50000 MHz
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SPI_CLOCK_FAST = 4, //21.00000 MHz
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SPI_CLOCK_ULTRAFAST = 2, //42.00000 MHz
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#else
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SPI_CLOCK_SLOW = 128, //00.56250 MHz
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SPI_CLOCK_STANDARD = 4, //09.00000 MHz
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SPI_CLOCK_FAST = 2, //18.00000 MHz
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SPI_CLOCK_ULTRAFAST = 2, //18.00000 MHz
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#endif
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} SPIClockDivider_e;
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typedef enum SPIDevice {
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SPIINVALID = -1,
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SPIDEV_1 = 0,
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SPIDEV_2,
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SPIDEV_3,
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SPIDEV_MAX = SPIDEV_3,
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} SPIDevice;
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typedef struct SPIDevice_s {
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SPI_TypeDef *dev;
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ioTag_t nss;
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ioTag_t sck;
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ioTag_t mosi;
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ioTag_t miso;
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rccPeriphTag_t rcc;
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uint8_t af;
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volatile uint16_t errorCount;
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bool sdcard;
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} spiDevice_t;
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bool spiInit(SPIDevice device);
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void spiSetDivisor(SPI_TypeDef *instance, uint16_t divisor);
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uint8_t spiTransferByte(SPI_TypeDef *instance, uint8_t in);
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bool spiIsBusBusy(SPI_TypeDef *instance);
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bool spiTransfer(SPI_TypeDef *instance, uint8_t *out, const uint8_t *in, int len);
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uint16_t spiGetErrorCounter(SPI_TypeDef *instance);
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void spiResetErrorCounter(SPI_TypeDef *instance);
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