diff options
Diffstat (limited to 'uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_gpio.c')
| -rw-r--r-- | uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_gpio.c | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_gpio.c b/uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_gpio.c new file mode 100644 index 0000000..f2d0941 --- /dev/null +++ b/uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_gpio.c @@ -0,0 +1,407 @@ +/******************** (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:
+* 05/24/2006 : 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);
+
+/* 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->GPIOOUT[0x07] = 0xAAAA;
+ SCU->GPIOOUT[0x07] = 0x0000;
+ SCU->GPIOIN[0x07] = 0x0000;
+ }
+
+ if(GPIOx == GPIO8)
+ {
+ SCU_APBPeriphReset(__GPIO8,ENABLE);
+ SCU_APBPeriphReset(__GPIO8,DISABLE);
+ SCU->GPIOEMI = 0x00;
+ }
+
+ if(GPIOx == GPIO9)
+ {
+ SCU_APBPeriphReset(__GPIO9,ENABLE);
+ SCU_APBPeriphReset(__GPIO9,DISABLE);
+ 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)
+ {
+ /*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);
+ }
+
+ /*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;
+ }
+
+ /*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;
+ }
+ }
+ }
+}
+
+/*******************************************************************************
+* 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)
+ {
+ if(GPIO_ANAChannel == GPIO_ANAChannelALL)
+ {
+ SCU->GPIOOUT[4] = 0x0000;
+ SCU->GPIOIN[4] = 0x00;
+ }
+ else
+ {
+ SCU->GPIOOUT[4] &= ~(0x3<<(GPIO_ANAChannel-1));
+ 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;
+}
+/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/
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