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gex-core/units/digital_out/_dout_api.c

73 lines
1.7 KiB

//
// Created by MightyPork on 2018/02/03.
//
#include "platform.h"
#include "unit_base.h"
#include "unit_dout.h"
#define DOUT_INTERNAL
#include "_dout_internal.h"
error_t UU_DOut_Write(Unit *unit, uint16_t packed)
{
CHECK_TYPE(unit, &UNIT_DOUT);
struct priv *priv = unit->data;
uint16_t mask = priv->pins;
uint16_t spread = pinmask_spread(packed, mask);
uint16_t set = spread;
uint16_t reset = ((~spread) & mask);
priv->port->BSRR = set | (reset << 16);
return E_SUCCESS;
}
error_t UU_DOut_Set(Unit *unit, uint16_t packed)
{
CHECK_TYPE(unit, &UNIT_DOUT);
struct priv *priv = unit->data;
uint16_t mask = priv->pins;
uint16_t spread = pinmask_spread(packed, mask);
priv->port->BSRR = spread;
return E_SUCCESS;
}
error_t UU_DOut_Clear(Unit *unit, uint16_t packed)
{
CHECK_TYPE(unit, &UNIT_DOUT);
struct priv *priv = unit->data;
uint16_t mask = priv->pins;
uint16_t spread = pinmask_spread(packed, mask);
priv->port->BSRR = (spread<<16);
return E_SUCCESS;
}
error_t UU_DOut_Toggle(Unit *unit, uint16_t packed)
{
CHECK_TYPE(unit, &UNIT_DOUT);
struct priv *priv = unit->data;
uint16_t mask = priv->pins;
uint16_t spread = pinmask_spread(packed, mask);
uint16_t flipped = (uint16_t) (~priv->port->ODR) & mask;
uint16_t set = flipped & spread;
uint16_t reset = ((~flipped) & mask) & spread;
priv->port->BSRR = set | (reset<<16);
return E_SUCCESS;
}
error_t UU_DOut_GetPinCount(Unit *unit, uint8_t *count)
{
CHECK_TYPE(unit, &UNIT_DOUT);
struct priv *priv = unit->data;
uint32_t packed = pinmask_pack(0xFFFF, priv->pins);
*count = (uint8_t)(32 - __CLZ(packed));
return E_SUCCESS;
}