From ad5b96d584fc9962a9d8504067cd59697fb9a580 Mon Sep 17 00:00:00 2001 From: henryk Date: Fri, 29 Feb 2008 08:53:20 +0000 Subject: New cleaned-up (and then messed up again) SSC code Better layering separation git-svn-id: https://svn.openpcd.org:2342/trunk@434 6dc7ffe9-61d6-0310-9af1-9938baff3ed1 --- openpicc/application/ssc_buffer.h | 46 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 openpicc/application/ssc_buffer.h (limited to 'openpicc/application/ssc_buffer.h') diff --git a/openpicc/application/ssc_buffer.h b/openpicc/application/ssc_buffer.h new file mode 100644 index 0000000..fdb977f --- /dev/null +++ b/openpicc/application/ssc_buffer.h @@ -0,0 +1,46 @@ +#ifndef SSC_BUFFER_H_ +#define SSC_BUFFER_H_ + +#define SSC_RX_BUFFER_SIZE_AS_UINT8 2048 +#define SSC_DMA_BUFFER_COUNT 4 + +#if SSC_RX_BUFFER_SIZE_AS_UINT8 < DIV_ROUND_UP((ISO14443A_MAX_RX_FRAME_SIZE_IN_BITS*ISO14443A_SAMPLE_LEN),8) +#undef SSC_RX_BUFFER_SIZE_AS_UINT8 +#define SSC_RX_BUFFER_SIZE_AS_UINT8 DIV_ROUND_UP((ISO14443A_MAX_RX_FRAME_SIZE_IN_BITS*ISO14443A_SAMPLE_LEN),8) +#endif + +typedef enum { + FREE=0, /* Buffer is free */ + PENDING, /* Buffer has been given to the DMA controller and is currently being filled */ + FULL, /* DMA controller signalled that the buffer is full */ + PROCESSING,/* The buffer is currently processed by the consumer (e.g. decoder) */ + PREFILLED, /* The buffer has been prefilled for later usage (only used for TX) */ +} ssc_dma_buffer_state_t; + +enum ssc_mode { + SSC_MODE_NONE, + SSC_MODE_14443A, +}; + +typedef struct { + enum ssc_mode mode; + u_int16_t transfersize_ssc; + u_int16_t transfersize_pdc; + u_int16_t transfers; +} ssc_mode_def; + +typedef struct { + volatile ssc_dma_buffer_state_t state; + u_int32_t len_transfers; /* Length of the content, in transfers */ + struct { + int overflow:1; + } flags; + const ssc_mode_def *reception_mode; /* Pointer to the SSC mode definition that the buffer has been loaded for (affects element size and count) */ + u_int8_t data[SSC_RX_BUFFER_SIZE_AS_UINT8]; +} ssc_dma_rx_buffer_t; + + +typedef struct { +} ssc_dma_tx_buffer_t; + +#endif /*SSC_BUFFER_H_*/ -- cgit v1.2.3