#include "dw_driver.h"
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#include "deca_sleep.h"
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void Reset_DW1000(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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// Enable GPIO used for DW1000 reset
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GPIO_InitStructure.GPIO_Pin = DW1000_RSTn;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(DW1000_RSTn_GPIO, &GPIO_InitStructure);
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//drive the RSTn pin low
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GPIO_ResetBits(DW1000_RSTn_GPIO, DW1000_RSTn);
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//put the pin back to tri-state ... as input
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GPIO_InitStructure.GPIO_Pin = DW1000_RSTn;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(DW1000_RSTn_GPIO, &GPIO_InitStructure);
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deca_sleep(2);
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}
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void DW_GPIO_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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/* Enable GPIO clock */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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// Enable GPIO used for DW1000 wakeup
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GPIO_InitStructure.GPIO_Pin = DW1000_WAKEUP;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(DW1000_WAKEUP_GPIO, &GPIO_InitStructure);
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// Enable GPIO used for DW1000 IRQ
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GPIO_InitStructure.GPIO_Pin = DW1000_IRQ;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //IRQ pin should be Pull Down to prevent unnecessary EXT IRQ while DW1000 goes to sleep mode
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(DW1000_IRQ_GPIO, &GPIO_InitStructure);
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// Connect EXTI Line to GPIO Pin
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GPIO_EXTILineConfig(DECAIRQ_EXTI_PORT, DECAIRQ_EXTI_PIN);
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// Configure EXTI line
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EXTI_InitStructure.EXTI_Line = DECAIRQ_EXTI;
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //MPW3 IRQ polarity is high by default
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EXTI_InitStructure.EXTI_LineCmd = DISABLE;
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EXTI_Init(&EXTI_InitStructure);
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}
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