tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_Maxim/TARGET_MAX32610/port_api.c

   1 /*******************************************************************************
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   4  * Permission is hereby granted, free of charge, to any person obtaining a
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  11  * The above copyright notice and this permission notice shall be included
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  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  26  * The mere transfer of this software does not imply any licenses
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  32  */
  33
  34 #include "port_api.h"
  35 #include "pinmap.h"
  36 #include "gpio_api.h"
  37 #include "gpio_regs.h"
  38 #include "clkman_regs.h"
  39
  40 PinName port_pin(PortName port, int pin_n)
  41 {
  42     return (PinName)((port << PORT_SHIFT) | pin_n);
  43 }
  44
  45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
  46 {
  47     obj->port = port;
  48     obj->mask = mask;
  49     obj->reg_out = &MXC_GPIO->out_val[port];
  50     obj->reg_in  = &MXC_GPIO->in_val[port];
  51
  52     /* Ensure that the GPIO clock is enabled */
  53     if (MXC_CLKMAN->clk_ctrl_1_gpio == MXC_E_CLKMAN_CLK_SCALE_DISABLED) {
  54         MXC_CLKMAN->clk_ctrl_1_gpio = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
  55     }
  56
  57     uint32_t i;
  58     // The function is set per pin: reuse gpio logic
  59     for (i=0; i<32; i++) {
  60         if (obj->mask & (1<<i)) {
  61             gpio_set(port_pin(obj->port, i));
  62             pin_dir(port_pin(obj->port, i), dir);
  63         }
  64     }
  65 }
  66
  67 void port_mode(port_t *obj, PinMode mode)
  68 {
  69     uint32_t i;
  70     // The mode is set per pin: reuse pinmap logic
  71     for (i=0; i<32; i++) {
  72         if (obj->mask & (1<<i)) {
  73             pin_mode(port_pin(obj->port, i), mode);
  74         }
  75     }
  76 }
  77
  78 void port_dir(port_t *obj, PinDirection dir)
  79 {
  80     uint32_t i;
  81     // The mode is set per pin: reuse gpio logic
  82     for (i=0; i<32; i++) {
  83         if (obj->mask & (1<<i)) {
  84             pin_dir(port_pin(obj->port, i), dir);
  85         }
  86     }
  87 }
  88
  89 void port_write(port_t *obj, int value)
  90 {
  91     *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
  92 }
  93
  94 int port_read(port_t *obj)
  95 {
  96     return (*obj->reg_in & obj->mask);
  97 }