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Diffstat (limited to 'openpicc/application/ssc_picc.h')
| -rw-r--r-- | openpicc/application/ssc_picc.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/openpicc/application/ssc_picc.h b/openpicc/application/ssc_picc.h deleted file mode 100644 index 3b6182a..0000000 --- a/openpicc/application/ssc_picc.h +++ /dev/null @@ -1,105 +0,0 @@ -#ifndef _SSC_H -#define _SSC_H - -#include "queue.h" -#include "iso14443_layer3a.h" - -extern void ssc_rx_start(void); -extern void ssc_rx_stop(void); - -/* Rx/Tx initialization separate, since Tx disables PWM output ! */ -extern void ssc_tx_init(void); -extern void ssc_rx_init(void); - -extern void ssc_fini(void); -extern void ssc_rx_stop(void); -extern void ssc_rx_unthrottle(void); -extern void __ramfunc ssc_rx_stop_frame_ended(void); - - -enum ssc_mode { - SSC_MODE_NONE, - SSC_MODE_14443A_SHORT, - SSC_MODE_14443A_STANDARD, - SSC_MODE_14443A, - SSC_MODE_14443B, - SSC_MODE_EDGE_ONE_SHOT, - SSC_MODE_CONTINUOUS, -}; - -extern void ssc_rx_mode_set(enum ssc_mode ssc_mode); - -typedef void (*ssc_irq_ext_t)(u_int32_t ssc_sr, enum ssc_mode ssc_mode, u_int8_t* samples); - -/* A fast method to extend the IRQ handler from the higher level code, e.g. to prepare - * an ATQA answer to REQA or WUPA in iso14443_layer3a. Normally I'd use the FreeRTOS - * primitives to wake the task and then do everything in task context, but the delay - * from SSC IRQ to the task returning from xQueueReceive is around 165us. Additionally to the - * delay from end of communication to SSC IRQ which is around 50us. This results in way more delay - * than acceptable for the synchronous responses (around 87us).*/ -extern ssc_irq_ext_t ssc_set_irq_extension(ssc_irq_ext_t ext_handler); - -/* These are various SSC performance metrics that can be queried */ -typedef enum { - OVERFLOWS, /* Overflows (e.g. no free buffer when reloading DMA controller) */ - BUFFER_ERRORS, /* Internal buffer management errors */ - FREE_BUFFERS, /* Free RX buffers */ - LATE_FRAMES, /* Frames that were not ready to be sent when the FDT passed; e.g. sent too late */ - SSC_ERRORS, /* General error count, e.g. OVERFLOWS + BUFFER_ERRORS */ -} ssc_metric; -extern int ssc_get_metric(ssc_metric metric); - -#define SSC_RX_BUFFER_SIZE 2048 -#define SSC_DMA_BUFFER_COUNT 4 - -#if SSC_RX_BUFFER_SIZE < ISO14443A_MAX_RX_FRAME_SIZE_IN_BITS -#undef SSC_RX_BUFFER_SIZE -#define SSC_RX_BUFFER_SIZE ISO14443A_MAX_RX_FRAME_SIZE_IN_BITS -#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; - -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 */ - 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]; -} 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 */ - void *source; /* Source pointer for a prefilled buffer; set to NULL if not used */ - 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; - -extern void ssc_tx_start(ssc_dma_tx_buffer_t *buf); -extern volatile u_int32_t ssc_tx_fiq_fdt_cdiv; -extern volatile u_int32_t ssc_tx_fiq_fdt_ssc; - -extern void ssc_set_data_gate(int enable); - -#endif |