ra8_sdfont.h

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#pragma once
 
#include <stdint.h>
 
#include "ra8_err.h"
#include "ra8_port_constants.h"

typedef enum : uint8_t {
  k_ra8_sdfont_source_card        = 0, 
  k_ra8_sdfont_source_provisioned = 1, 
} ra8_sdfont_source_t;

typedef struct {
  uint8_t        spi_channel;    
  ra8_port_pin_t sck;            
  ra8_port_pin_t cipo;           
  ra8_port_pin_t copi;           
  ra8_port_pin_t cs;             
  uint32_t       pclka_hz;       
  const char*    filename;       
  const uint8_t* provision_blob; 
  uint32_t       provision_len;  
} ra8_sdfont_cfg_t;

[[nodiscard]] ra8_err_t ra8_sdfont_load(const ra8_sdfont_cfg_t* cfg,
                                        uint8_t*                buf,
                                        uint32_t                cap,
                                        uint32_t*               out_len,
                                        ra8_sdfont_source_t*    out_source);