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Code Issues Releases Activity

Properly enable circular buffering on the overo spi

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This commit is contained in:
James Cotton 2012-07-20 10:59:18 -05:00
parent 6a3c067c18
commit 337f0e8bfa
1 changed files with 9 additions and 2 deletions
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11
flight/PiOS/STM32F4xx/pios_overo.c
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@ -251,6 +251,7 @@ int32_t PIOS_OVERO_Init(uint32_t * overo_id, const struct pios_overo_cfg * cfg)
dma_init.DMA_BufferSize = PACKET_SIZE;
DMA_Init(overo_dev->cfg->dma.rx.channel, &dma_init);
DMA_DoubleBufferModeConfig(overo_dev->cfg->dma.rx.channel, (uint32_t) overo_dev->rx_buffer[1], DMA_Memory_0);
DMA_DoubleBufferModeCmd(overo_dev->cfg->dma.rx.channel, ENABLE);
DMA_DeInit(overo_dev->cfg->dma.tx.channel);
dma_init = overo_dev->cfg->dma.tx.init;
@ -259,7 +260,12 @@ int32_t PIOS_OVERO_Init(uint32_t * overo_id, const struct pios_overo_cfg * cfg)
dma_init.DMA_BufferSize = PACKET_SIZE;
DMA_Init(overo_dev->cfg->dma.tx.channel, &dma_init);
DMA_DoubleBufferModeConfig(overo_dev->cfg->dma.tx.channel, (uint32_t) overo_dev->tx_buffer[1], DMA_Memory_0);
DMA_DoubleBufferModeCmd(overo_dev->cfg->dma.tx.channel, ENABLE);
/* Set the packet size */
DMA_SetCurrDataCounter(overo_dev->cfg->dma.rx.channel, PACKET_SIZE);
DMA_SetCurrDataCounter(overo_dev->cfg->dma.tx.channel, PACKET_SIZE);
/* Initialize the SPI block */
SPI_DeInit(overo_dev->cfg->regs);
SPI_Init(overo_dev->cfg->regs, (SPI_InitTypeDef*)&(overo_dev->cfg->init));
@ -271,9 +277,10 @@ int32_t PIOS_OVERO_Init(uint32_t * overo_id, const struct pios_overo_cfg * cfg)
/* Enable SPI interrupts to DMA */
SPI_I2S_DMACmd(overo_dev->cfg->regs, SPI_I2S_DMAReq_Tx | SPI_I2S_DMAReq_Rx, ENABLE);
/* Configure DMA interrupt */
NVIC_Init((NVIC_InitTypeDef*)&(overo_dev->cfg->dma.irq.init));
DMA_ITConfig(overo_dev->cfg->dma.tx.channel, DMA_IT_TC, ENABLE);
/* Enable the DMA channels */
DMA_Cmd(overo_dev->cfg->dma.tx.channel, ENABLE);