diff options
Diffstat (limited to 'openpicc/application/ssc_picc.h')
| -rw-r--r-- | openpicc/application/ssc_picc.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/openpicc/application/ssc_picc.h b/openpicc/application/ssc_picc.h index 813ef33..db3cc00 100644 --- a/openpicc/application/ssc_picc.h +++ b/openpicc/application/ssc_picc.h @@ -2,6 +2,7 @@ #define _SSC_H #include "queue.h" +#include "iso14443_layer3a.h" extern void ssc_rx_start(void); extern void ssc_rx_stop(void); @@ -29,7 +30,7 @@ extern portBASE_TYPE ssc_get_overflows(void); extern int ssc_count_free(void); #define SSC_DMA_BUFFER_SIZE 2048 -#define SSC_DMA_BUFFER_COUNT 10 +#define SSC_DMA_BUFFER_COUNT 4 typedef enum { FREE=0, /* Buffer is free */ @@ -43,8 +44,22 @@ typedef struct { u_int32_t len; /* Length of the content */ enum ssc_mode reception_mode; u_int8_t data[SSC_DMA_BUFFER_SIZE]; -} ssc_dma_buffer_t; +} ssc_dma_rx_buffer_t; extern xQueueHandle ssc_rx_queue; +/* in bytes, used for the sample buffer that holds the subcarrier modulation data at fc/8 = 1695 MHz */ +#define SSC_TX_BUFFER_SIZE ((MAXIMUM_FRAME_SIZE*( (8+1)*2 ) ) + 2 + 2) + +typedef struct { + volatile ssc_dma_buffer_state_t state; + u_int32_t len; /* Length of the content */ + u_int8_t data[SSC_TX_BUFFER_SIZE]; +} ssc_dma_tx_buffer_t; + +/* Declare one TX buffer. This means that only one buffer can ever be pending for sending. That's because + * this buffer must be huge (one frame of 256 bytes of subcarrier modulation data at 1695 MHz sample + * rate is approx 4k bytes). */ +extern ssc_dma_tx_buffer_t ssc_tx_buffer; + #endif |