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Making Your Code Modular

Practical techniques for separating responsibilities and building maintainable embedded software.

This English edition retains the original diagrams and examples for direct use.

Reference diagram 1

Reference diagram 2

Reference diagram 3

Reference diagram 4

Commands and examples

typedef struct {
    void (*modem_power_up_ptr)(); 
    void (*modem_reset_ptr)(); 
    void (*modem_power_off_ptr)(); 
    uint32_t (*modem_read_ptr)(int32_t fd, uint8_t *buffer, uint32_t length, uint32_t timeout); 
    uint32_t (*modem_write_ptr)(int32_t fd, const uint8_t *data, uint32_t length); 
    void (*modem_dtr_ptr)(bool state); 
    bool (*modem_ri_read)(); 
    void (*modem_wake_up_psm)(); 
} HalModemOps;

Practical notes

Adapt the commands and configuration to the version, distribution, and target hardware being used.