C++ (Cpp) PFCAE Examples

Example #1

File: pinmap.c Project: antonio-salieri/mbed

void pin_function(PinName pin, int function) {
    if (pin == (PinName)NC) return;
    
    int n = pin >> 4;
    int bitmask = 1<<(pin  & 0xf);
    
    if (gpio_multi_guard != pin) {
        if (function == 0) {
            // means GPIO mode
            *PMC(n) &= ~bitmask;
        } else {
            // alt-function mode
            *PMC(n) |= bitmask;
            --function;

            if (function & (1 << 2)) { *PFCAE(n) |= bitmask;}else  { *PFCAE(n) &= ~bitmask;}
            if (function & (1 << 1)) { *PFCE(n) |= bitmask;}else  { *PFCE(n) &= ~bitmask;}
            if (function & (1 << 0)) { *PFC(n) |= bitmask;}else  { *PFC(n) &= ~bitmask;}
            *PIPC(n) |= bitmask;

            if (P1_0 <= pin && pin <= P1_7 && function == 0) {
                *PBDC(n) |= bitmask;
            }
        }
    } else {
        gpio_multi_guard = (PinName)NC;
    }
}

Example #2

File: pinmap.c Project: AlessandroA/mbed

void pin_function(PinName pin, int function) {
    if (pin == (PinName)NC) return;
    
    int n = pin >> 4;
    int bitmask = 1<<(pin  & 0xf);
    const PinFunc * Pipc_0_func = PIPC_0_tbl;
    int pipc_data = 1;
    
    if (gpio_multi_guard != pin) {
        if (function == 0) {
            // means GPIO mode
            *PMC(n) &= ~bitmask;
        } else {
            // alt-function mode
            --function;

            if (function & (1 << 2)) { *PFCAE(n) |= bitmask;}else  { *PFCAE(n) &= ~bitmask;}
            if (function & (1 << 1)) { *PFCE(n) |= bitmask;}else  { *PFCE(n) &= ~bitmask;}
            if (function & (1 << 0)) { *PFC(n) |= bitmask;}else  { *PFC(n) &= ~bitmask;}

            while (Pipc_0_func->pin != NC) {
                if ((Pipc_0_func->pin == pin) && ((Pipc_0_func->function - 1) == function)) {
                    pipc_data = 0;
                    if (Pipc_0_func->pm == 0) {
                        *PMSR(n) = (bitmask << 16) | 0;
                    } else if (Pipc_0_func->pm == 1) {
                        *PMSR(n) = (bitmask << 16) | bitmask;
                    } else {
                        // Do Nothing
                    }
                    break;
                }
                Pipc_0_func++;
            }
            if (pipc_data == 1) {
            *PIPC(n) |= bitmask;
            } else {
                *PIPC(n) &= ~bitmask;
            }

            if (P1_0 <= pin && pin <= P1_7 && function == 0) {
                *PBDC(n) |= bitmask;
            }
            *PMC(n) |= bitmask;
        }
    } else {
        gpio_multi_guard = (PinName)NC;
    }
}