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Code Issues Wiki Activity

Basic SDCard block read / write (minimal timeout/error handling)

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This commit is contained in:
Nicholas Sherlock 2015-10-22 14:27:36 +13:00 • committed by borisbstyle
parent 3941c6c252
commit 84d3cc6175
11 changed files with 927 additions and 7 deletions
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64
src/main/drivers/bus_spi.c
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@ -69,13 +69,34 @@ void initSpi1(void)
GPIO_PinAFConfig(SPI1_GPIO, SPI1_NSS_PIN_SOURCE, GPIO_AF_5);
#endif
// Init pins
GPIO_InitStructure.GPIO_Pin = SPI1_SCK_PIN | SPI1_MISO_PIN | SPI1_MOSI_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
#ifdef USE_SDCARD_SPI1
// Configure pins and pullups for SD-card use
// No pull-up needed since we drive this pin as an output
GPIO_InitStructure.GPIO_Pin = SPI1_MOSI_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI1_GPIO, &GPIO_InitStructure);
// Prevent MISO pin from floating when SDCard is deselected (high-Z) or not connected
GPIO_InitStructure.GPIO_Pin = SPI1_MISO_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(SPI1_GPIO, &GPIO_InitStructure);
// In clock-low mode, STM32 manual says we should enable a pulldown to match
GPIO_InitStructure.GPIO_Pin = SPI1_SCK_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(SPI1_GPIO, &GPIO_InitStructure);
#else
// General-purpose pin config
GPIO_InitStructure.GPIO_Pin = SPI1_SCK_PIN | SPI1_MISO_PIN | SPI1_MOSI_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI1_GPIO, &GPIO_InitStructure);
#endif
#ifdef SPI1_NSS_PIN
GPIO_InitStructure.GPIO_Pin = SPI1_NSS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
@ -116,9 +137,15 @@ void initSpi1(void)
spi.SPI_NSS = SPI_NSS_Soft;
spi.SPI_FirstBit = SPI_FirstBit_MSB;
spi.SPI_CRCPolynomial = 7;
spi.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
#ifdef USE_SDCARD_SPI1
spi.SPI_CPOL = SPI_CPOL_Low;
spi.SPI_CPHA = SPI_CPHA_1Edge;
#else
spi.SPI_CPOL = SPI_CPOL_High;
spi.SPI_CPHA = SPI_CPHA_2Edge;
spi.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
#endif
#ifdef STM32F303xC
// Configure for 8-bit reads.
@ -173,13 +200,34 @@ void initSpi2(void)
GPIO_PinAFConfig(SPI2_GPIO, SPI2_NSS_PIN_SOURCE, GPIO_AF_5);
#endif
GPIO_InitStructure.GPIO_Pin = SPI2_SCK_PIN | SPI2_MISO_PIN | SPI2_MOSI_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
#ifdef USE_SDCARD_SPI2
// Configure pins and pullups for SD-card use
// No pull-up needed since we drive this pin as an output
GPIO_InitStructure.GPIO_Pin = SPI2_MOSI_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
// Prevent MISO pin from floating when SDCard is deselected (high-Z) or not connected
GPIO_InitStructure.GPIO_Pin = SPI2_MISO_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
// In clock-low mode, STM32 manual says we should enable a pulldown to match
GPIO_InitStructure.GPIO_Pin = SPI2_SCK_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
#else
// General-purpose pin config
GPIO_InitStructure.GPIO_Pin = SPI2_SCK_PIN | SPI2_MISO_PIN | SPI2_MOSI_PIN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPI2_GPIO, &GPIO_InitStructure);
#endif
#ifdef SPI2_NSS_PIN
GPIO_InitStructure.GPIO_Pin = SPI2_NSS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
@ -219,13 +267,19 @@ void initSpi2(void)
spi.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi.SPI_Mode = SPI_Mode_Master;
spi.SPI_DataSize = SPI_DataSize_8b;
spi.SPI_CPOL = SPI_CPOL_High;
spi.SPI_CPHA = SPI_CPHA_2Edge;
spi.SPI_NSS = SPI_NSS_Soft;
spi.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
spi.SPI_FirstBit = SPI_FirstBit_MSB;
spi.SPI_CRCPolynomial = 7;
#ifdef USE_SDCARD_SPI2
spi.SPI_CPOL = SPI_CPOL_Low;
spi.SPI_CPHA = SPI_CPHA_1Edge;
#else
spi.SPI_CPOL = SPI_CPOL_High;
spi.SPI_CPHA = SPI_CPHA_2Edge;
#endif
#ifdef STM32F303xC
// Configure for 8-bit reads.
SPI_RxFIFOThresholdConfig(SPI2, SPI_RxFIFOThreshold_QF);