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/******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** |
* File Name : 91x_gpio.c |
* Author : MCD Application Team |
* Date First Issued : 05/18/2006 : Version 1.0 |
* Description : This file provides all the GPIO software functions. |
******************************************************************************** |
* History: |
* 05/22/2007 : Version 1.2 |
* 05/24/2006 : Version 1.1 |
* 05/18/2006 : Version 1.0 |
******************************************************************************** |
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, |
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE |
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING |
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
*******************************************************************************/ |
|
/* Includes ------------------------------------------------------------------*/ |
#include "91x_gpio.h" |
#include "91x_scu.h" |
|
/* Private typedef -----------------------------------------------------------*/ |
/* Private define ------------------------------------------------------------*/ |
|
/* Private macro -------------------------------------------------------------*/ |
/* Private variables ---------------------------------------------------------*/ |
/* Private function prototypes -----------------------------------------------*/ |
static u8 GPIO_GetGPIONumber(GPIO_TypeDef* GPIOx); |
static u16 GPIO_GetAnaloClearBits(u8 GPIO_ANAChannel); |
|
/* Private functions ---------------------------------------------------------*/ |
|
/******************************************************************************* |
* Function Name : GPIO_DeInit |
* Description : Deinitializes the GPIOx peripheral registers to their default |
* reset values. |
* Input : GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_DeInit(GPIO_TypeDef* GPIOx) |
{ |
/* Reset the GPIO registers values */ |
if(GPIOx == GPIO0) |
{ |
SCU_APBPeriphReset(__GPIO0,ENABLE); |
SCU_APBPeriphReset(__GPIO0,DISABLE); |
SCU->GPIOTYPE[0x00] = 0x0000 ; |
SCU->GPIOOUT[0x00] = 0x0000; |
SCU->GPIOIN[0x00] = 0x0000; |
} |
|
if(GPIOx == GPIO1) |
{ |
SCU_APBPeriphReset(__GPIO1,ENABLE); |
SCU_APBPeriphReset(__GPIO1,DISABLE); |
SCU->GPIOTYPE[0x01] = 0x0000 ; |
SCU->GPIOOUT[0x01] = 0x0000; |
SCU->GPIOIN[0x01] = 0x0000; |
} |
|
if(GPIOx == GPIO2) |
{ |
SCU_APBPeriphReset(__GPIO2,ENABLE); |
SCU_APBPeriphReset(__GPIO2,DISABLE); |
SCU->GPIOTYPE[0x02] = 0x0000 ; |
SCU->GPIOOUT[0x02] = 0x0000; |
SCU->GPIOIN[0x02] = 0x0000; |
} |
|
if(GPIOx == GPIO3) |
{ |
SCU_APBPeriphReset(__GPIO3,ENABLE); |
SCU_APBPeriphReset(__GPIO3,DISABLE); |
SCU->GPIOTYPE[0x03] = 0x0000 ; |
SCU->GPIOOUT[0x03] = 0x0000; |
SCU->GPIOIN[0x03] = 0x0000; |
} |
|
if(GPIOx == GPIO4) |
{ |
SCU_APBPeriphReset(__GPIO4,ENABLE); |
SCU_APBPeriphReset(__GPIO4,DISABLE); |
SCU->GPIOTYPE[0x04] = 0x0000 ; |
SCU->GPIOOUT[0x04] = 0x0000; |
SCU->GPIOIN[0x04] = 0x0000; |
SCU->GPIOANA = 0x00; |
} |
|
if(GPIOx == GPIO5) |
{ |
SCU_APBPeriphReset(__GPIO5,ENABLE); |
SCU_APBPeriphReset(__GPIO5,DISABLE); |
SCU->GPIOTYPE[0x05] = 0x0000 ; |
SCU->GPIOOUT[0x05] = 0x0000; |
SCU->GPIOIN[0x05] = 0x0000; |
} |
|
if(GPIOx == GPIO6) |
{ |
SCU_APBPeriphReset(__GPIO6,ENABLE); |
SCU_APBPeriphReset(__GPIO6,DISABLE); |
SCU->GPIOTYPE[0x06] = 0x0000 ; |
SCU->GPIOOUT[0x06] = 0x0000; |
SCU->GPIOIN[0x06] = 0x0000; |
} |
|
if(GPIOx == GPIO7) |
{ |
SCU_APBPeriphReset(__GPIO7,ENABLE); |
SCU_APBPeriphReset(__GPIO7,DISABLE); |
SCU->GPIOTYPE[0x07] = 0x0000; |
SCU->GPIOOUT[0x07] = 0x0000; |
SCU->GPIOIN[0x07] = 0x0000; |
} |
|
if(GPIOx == GPIO8) |
{ |
SCU_APBPeriphReset(__GPIO8,ENABLE); |
SCU_APBPeriphReset(__GPIO8,DISABLE); |
SCU->GPIOTYPE[0x08] = 0x0000; |
SCU->GPIOEMI = 0x00; |
} |
|
if(GPIOx == GPIO9) |
{ |
SCU_APBPeriphReset(__GPIO9,ENABLE); |
SCU_APBPeriphReset(__GPIO9,DISABLE); |
SCU->GPIOTYPE[0x09] = 0x0000; |
SCU->GPIOEMI = 0x00; |
} |
} |
/******************************************************************************* |
* Function Name : GPIO_Init |
* Description : Initializes the GPIOx peripheral according to the specified |
* parameters in the GPIO_InitStruct . |
* Input :- GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* - GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that |
* contains the configuration information for the specified GPIO |
* peripheral. |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct) |
{ |
/* Select pin direction */ |
u8 PinNumber = 0; |
u8 Counter = 0; |
u8 GPIO_Number = 0; |
|
GPIO_Number = GPIO_GetGPIONumber(GPIOx); |
|
if(GPIO_InitStruct->GPIO_Direction == GPIO_PinOutput) |
{ |
GPIOx->DDR |= GPIO_InitStruct->GPIO_Pin; |
} |
else |
{ |
GPIOx->DDR &= ~GPIO_InitStruct->GPIO_Pin; |
} |
|
for (Counter = 0; Counter < 8;Counter++) |
{ |
/*Search pin number*/ |
PinNumber = (GPIO_InitStruct->GPIO_Pin & (1 <<Counter)); |
if((PinNumber >> Counter) == 1) |
{ |
if (GPIO_Number < 8) |
{ |
/*Output ALternate 0*/ |
SCU->GPIOOUT[GPIO_Number] &= ~(0x3 <<(Counter *2)); |
if(GPIO_InitStruct->GPIO_Alternate == GPIO_OutputAlt1) |
{ |
/*Output ALternate 1*/ |
SCU->GPIOOUT[GPIO_Number] |= 1 << (Counter *2); |
} |
if(GPIO_InitStruct->GPIO_Alternate == GPIO_OutputAlt2) |
{ |
/*Output ALternate 2*/ |
SCU->GPIOOUT[GPIO_Number] |= 0x2 << (Counter *2); |
} |
if(GPIO_InitStruct->GPIO_Alternate == GPIO_OutputAlt3) |
{ |
/*Output ALternate 3*/ |
SCU->GPIOOUT[GPIO_Number] |= 0x3 << (Counter *2); |
} |
|
/*IP Connected disable*/ |
SCU->GPIOIN[GPIO_Number] &= ~(0x1 << Counter) ; |
if(GPIO_InitStruct->GPIO_IPConnected == GPIO_IPConnected_Enable) |
{ |
/*IP Connected enable*/ |
SCU->GPIOIN[GPIO_Number] |= 0x1 << Counter; |
} |
} |
|
/*Type configuration: PushPull or Open Collector*/ |
SCU->GPIOTYPE[GPIO_Number] &= ~(0x1 << Counter) ; |
if(GPIO_InitStruct->GPIO_Type == GPIO_Type_OpenCollector) |
{ |
/*Open Drain configuration*/ |
SCU->GPIOTYPE[GPIO_Number] |= 0x1 << Counter; |
} |
} |
} |
} |
|
/******************************************************************************* |
* Function Name : GPIO_StructInit |
* Description : Initialize the GPIO Init Structure parameters |
* Input : GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure |
* which will be initialized. |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct) |
{ |
/* Reset GPIO init structure parameters values */ |
GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All; |
GPIO_InitStruct->GPIO_Direction = GPIO_PinInput; |
GPIO_InitStruct->GPIO_Type = GPIO_Type_PushPull; |
GPIO_InitStruct->GPIO_IPConnected = GPIO_IPConnected_Disable; |
GPIO_InitStruct->GPIO_Alternate = GPIO_InputAlt1; |
} |
|
/******************************************************************************* |
* Function Name : GPIO_ReadBit |
* Description : Reads the specified port pin |
* Input : - GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* : - GPIO_Pin: the Pin number. This parameter can be GPIO_Pin_x |
* where x can be (0..7). |
* Output : None |
* Return : The port pin value |
*******************************************************************************/ |
u8 GPIO_ReadBit(GPIO_TypeDef* GPIOx, u8 GPIO_Pin) |
{ |
if ((((GPIOx->DR[GPIO_Pin<<2])) & GPIO_Pin) != Bit_RESET ) |
{ |
return Bit_SET; |
} |
else |
{ |
return Bit_RESET; |
} |
} |
|
/******************************************************************************* |
* Function Name : GPIO_Read |
* Description : Reads the specified GPIO data port |
* Input : - GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* Output : None |
* Return : GPIO data port word value. |
*******************************************************************************/ |
u8 GPIO_Read(GPIO_TypeDef* GPIOx) |
{ |
return (GPIOx->DR[0x3FC]); |
} |
|
/******************************************************************************* |
* Function Name : GPIO_WriteBit |
* Description : Sets or clears the selected data port bit. |
* Input : - GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* - GPIO_Pin: the Pin number. This parameter can be GPIO_Pin_x |
* where x can be (0..7). |
* - BitVal: this parameter specifies the value to be written |
* to the selected bit. |
* BitVal must be one of the BitAction enum values: |
* - Bit_RESET: to clear the port pin |
* - Bit_SET: to set the port pin |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_WriteBit(GPIO_TypeDef* GPIOx, u8 GPIO_Pin, BitAction BitVal) |
{ |
if(BitVal == Bit_SET) |
{ |
GPIOx->DR[GPIO_Pin <<2] = GPIO_Pin; |
} |
else |
{ |
GPIOx->DR[GPIO_Pin <<2] = 0x00; |
} |
} |
|
/******************************************************************************* |
* Function Name : GPIO_Write |
* Description : Writes the passed value in the selected data GPIOx port |
* register. |
* Input :- GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* - PortVal: the value to be written to the data port register. |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_Write(GPIO_TypeDef* GPIOx, u8 PortVal) |
{ |
GPIOx->DR[0x3FC] = PortVal; |
} |
|
/******************************************************************************* |
* Function Name : GPIO_EMIConfig |
* Description : Enables or disables GPIO 8 and 9 in EMI mode. |
* Input : - NewState: new state of the EMI. |
* This parameter can be: ENABLE or DISABLE. |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_EMIConfig(FunctionalState NewState) |
{ |
if(NewState == ENABLE) |
{ |
SCU->GPIOEMI = 0x01; |
} |
else |
{ |
SCU->GPIOEMI = 0x00; |
} |
} |
|
/******************************************************************************* |
* Function Name : GPIO_ANAPinConfig |
* Description : Enables or disables pins from GPIO 4 in Analogue mode. |
* Input :- GPIO_ANAChannel: selects the ADC channel pin. |
* This parameter can be one of the following values: |
* GPIO_ANAChannel0 |
* GPIO_ANAChannel1 |
* GPIO_ANAChannel2 |
* GPIO_ANAChannel3 |
* GPIO_ANAChannel4 |
* GPIO_ANAChannel5 |
* GPIO_ANAChannel6 |
* GPIO_ANAChannel7 |
* GPIO_ANAChannelALL |
* - NewState: new state of the port pin. |
* This parameter can be: ENABLE or DISABLE. |
* Output : None |
* Return : None |
*******************************************************************************/ |
void GPIO_ANAPinConfig(u8 GPIO_ANAChannel, FunctionalState NewState) |
{ |
if(NewState == ENABLE) |
{ |
SCU->GPIOOUT[4] &= GPIO_GetAnaloClearBits(GPIO_ANAChannel); |
SCU->GPIOIN[4] &= ~GPIO_ANAChannel; |
SCU->GPIOANA |= GPIO_ANAChannel; |
} |
else |
{ |
SCU->GPIOANA &= ~GPIO_ANAChannel; |
} |
} |
|
/******************************************************************************* |
* Function Name : GPIO_GetGPIONumber |
* Description : searche the GPIO number. |
* Input : GPIOx: where x can be (0..9) to select the GPIO peripheral. |
* Output : None |
* Return : GPIO number |
*******************************************************************************/ |
u8 GPIO_GetGPIONumber(GPIO_TypeDef* GPIOx) |
{ |
if(GPIOx == GPIO1) |
{ |
return 1; |
} |
if(GPIOx == GPIO2) |
{ |
return 2; |
} |
if(GPIOx == GPIO3) |
{ |
return 3; |
} |
if(GPIOx == GPIO4) |
{ |
return 4; |
} |
if(GPIOx == GPIO5) |
{ |
return 5; |
} |
if(GPIOx == GPIO6) |
{ |
return 6; |
} |
if(GPIOx == GPIO7) |
{ |
return 7; |
} |
if(GPIOx == GPIO8) |
{ |
return 8; |
} |
if(GPIOx == GPIO9) |
{ |
return 9; |
} |
return 0; |
} |
/******************************************************************************* |
* Function Name : GPIO_GetAnaloClearBits |
* Description : Clear the corresponding bits in the SCU_OUT register. |
* Input : GPIO_ANAChannel: selects the ADC channel pin. |
* This parameter can be one of the following values: |
* GPIO_ANAChannel0 |
* GPIO_ANAChannel1 |
* GPIO_ANAChannel2 |
* GPIO_ANAChannel3 |
* GPIO_ANAChannel4 |
* GPIO_ANAChannel5 |
* GPIO_ANAChannel6 |
* GPIO_ANAChannel7 |
* GPIO_ANAChannelALL |
* Output : None |
* Return : reset value in SCU_OUT register |
*******************************************************************************/ |
u16 GPIO_GetAnaloClearBits(u8 GPIO_ANAChannel) |
{ |
if(GPIO_ANAChannel == GPIO_ANAChannel0) |
{ |
return 0xFFFC; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel1) |
{ |
return 0xFFF3; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel2) |
{ |
return 0xFFCF; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel3) |
{ |
return 0xFF3F; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel4) |
{ |
return 0xFCFF; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel5) |
{ |
return 0xF3FF; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel6) |
{ |
return 0xCFFF; |
} |
if(GPIO_ANAChannel == GPIO_ANAChannel7) |
{ |
return 0x3FFF; |
} |
/*Default vaule: return GPIO_ANAChannelALL*/ |
return 0x0000; |
} |
/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/ |
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