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Added the TIME driver for RL78G14.

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This commit is contained in:
Dragos Bogdan 2013-05-23 16:12:03 +03:00
parent 3def9dc72e
commit 97fb8b4a44
8 changed files with 411 additions and 125 deletions
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181
Communication.c
View file

@ -66,25 +66,25 @@ __interrupt static void IICA0_Interrupt(void)
/***************************************************************************//**
* @brief Initializes the SPI communication peripheral.
*
* @param lsbFirst - Transfer format (0 or 1).
* Example: 0x0 - MSB first.
* 0x1 - LSB first.
* @param lsbFirst - Transfer format (0 or 1).
* Example: 0x0 - MSB first.
* 0x1 - LSB first.
* @param clockFreq - SPI clock frequency (Hz).
* Example: 1000 - SPI clock frequency is 1 kHz.
* @param clockPol - SPI clock polarity (0 or 1).
* Example: 0x0 - Idle state for clock is a low level; active
* state is a high level;
* 0x1 - Idle state for clock is a high level; active
* state is a low level.
* @param clockEdg - SPI clock edge (0 or 1).
* Example: 0x0 - Serial output data changes on transition
* from idle clock state to active clock state;
* 0x1 - Serial output data changes on transition
* from active clock state to idle clock state.
* @param clockPol - SPI clock polarity (0 or 1).
* Example: 0x0 - Idle state for clock is a low level; active
* state is a high level;
* 0x1 - Idle state for clock is a high level; active
* state is a low level.
* @param clockEdg - SPI clock edge (0 or 1).
* Example: 0x0 - Serial output data changes on transition
* from idle clock state to active clock state;
* 0x1 - Serial output data changes on transition
* from active clock state to idle clock state.
*
* @return status - Result of the initialization procedure.
* Example: 1 - if initialization was successful;
* 0 - if initialization was unsuccessful.
* @return status - Result of the initialization procedure.
* Example: 0 - if initialization was successful;
* -1 - if initialization was unsuccessful.
*******************************************************************************/
char SPI_Init(char lsbFirst,
long clockFreq,
@ -93,6 +93,7 @@ char SPI_Init(char lsbFirst,
{
long mckFreq = 32000000;
char sdrValue = 0;
char delay = 0;
/* Configure the CS pins. */
PMOD1_CS_OUT;
@ -119,43 +120,49 @@ char SPI_Init(char lsbFirst,
SMR11 = 0x0020;
clockPol = 1 - clockPol;
SCR11 = (clockEdg << 13) |
(clockPol << 12) |
0xC000 | // Operation mode: Transmission/reception.
0x0007; // 8-bit data length.
SCR11 = (clockEdg << 13) |
(clockPol << 12) |
0xC000 | // Operation mode: Transmission/reception.
0x0007; // 8-bit data length.
/* clockFreq = mckFreq / (sdrValue * 2 + 2) */
sdrValue = mckFreq / (2 * clockFreq) - 1;
SDR11 = sdrValue << 9;
SDR11 = sdrValue << 9;
/* Set the clock and data initial level. */
clockPol = 1 - clockPol;
SO1 &= ~0x0202;
SO1 |= (clockPol << 9) |
SO1 &= ~0x0202;
SO1 |= (clockPol << 9) |
(clockPol << 1);
/* Enable output for serial communication operation. */
SOE1 |= 0x0002;
/* Configure SCLK and MOSI pins as output. */
PM7 &= ~0x05;
P7 |= 0x05;
/* Configure the MISO pin as input. */
PM7 |= 0x02;
PM7 |= 0x02;
/* Configure SCLK and MOSI pins as output. */
P7 |= 0x05;
PM7 &= ~0x05;
/* Wait for the changes to take place. */
for(delay = 0; delay < 50; delay++)
{
NOP;
}
/* Set the SEmn bit to 1 and enter the communication wait status */
SS1 |= 0x0002;
return 1;
return 0;
}
/***************************************************************************//**
* @brief Writes data to SPI.
*
* @param slaveDeviceId - The ID of the selected slave device.
* @param data - Data represents the write buffer.
* @param bytesNumber - Number of bytes to write.
* @param data - Data represents the write buffer.
* @param bytesNumber - Number of bytes to write.
*
* @return Number of written bytes.
*******************************************************************************/
@ -163,8 +170,10 @@ char SPI_Write(char slaveDeviceId,
unsigned char* data,
char bytesNumber)
{
char byte = 0;
unsigned char read = 0;
char byte = 0;
unsigned char read = 0;
unsigned short originalSCR = 0;
unsigned short originalSO1 = 0;
if(slaveDeviceId == 1)
{
@ -176,6 +185,12 @@ char SPI_Write(char slaveDeviceId,
}
if(slaveDeviceId == 3)
{
ST1 |= 0x0002;
originalSO1 = SO1;
originalSCR = SCR11;
SO1 &= ~0x0202;
SCR11 &= ~0x3000;
SS1 |= 0x0002;
ST7579_CS_LOW;
}
for(byte = 0; byte < bytesNumber; byte++)
@ -196,6 +211,10 @@ char SPI_Write(char slaveDeviceId,
if(slaveDeviceId == 3)
{
ST7579_CS_HIGH;
ST1 |= 0x0002;
SO1 = originalSO1;
SCR11 = originalSCR;
SS1 |= 0x0002;
}
return bytesNumber;
@ -205,9 +224,9 @@ char SPI_Write(char slaveDeviceId,
* @brief Reads data from SPI.
*
* @param slaveDeviceId - The ID of the selected slave device.
* @param data - Data represents the write buffer as an input parameter and the
* read buffer as an output parameter.
* @param bytesNumber - Number of bytes to read.
* @param data - Data represents the write buffer as an input parameter
* and the read buffer as an output parameter.
* @param bytesNumber - Number of bytes to read.
*
* @return Number of read bytes.
*******************************************************************************/
@ -215,7 +234,9 @@ char SPI_Read(char slaveDeviceId,
unsigned char* data,
char bytesNumber)
{
char byte = 0;
char byte = 0;
unsigned short originalSCR = 0;
unsigned short originalSO1 = 0;
if(slaveDeviceId == 1)
{
@ -227,6 +248,12 @@ char SPI_Read(char slaveDeviceId,
}
if(slaveDeviceId == 3)
{
ST1 |= 0x0002;
originalSO1 = SO1;
originalSCR = SCR11;
SO1 &= ~0x0202;
SCR11 &= ~0x3000;
SS1 |= 0x0002;
ST7579_CS_LOW;
}
for(byte = 0; byte < bytesNumber; byte++)
@ -247,6 +274,10 @@ char SPI_Read(char slaveDeviceId,
if(slaveDeviceId == 3)
{
ST7579_CS_HIGH;
ST1 |= 0x0002;
SO1 = originalSO1;
SCR11 = originalSCR;
SS1 |= 0x0002;
}
return bytesNumber;
@ -257,9 +288,9 @@ char SPI_Read(char slaveDeviceId,
*
* @param clockFreq - I2C clock frequency (Hz).
* Example: 100000 - SPI clock frequency is 100 kHz.
* @return status - Result of the initialization procedure.
* Example: 1 - if initialization was successful;
* 0 - if initialization was unsuccessful.
* @return status - Result of the initialization procedure.
* Example: 0 - if initialization was successful;
* -1 - if initialization was unsuccessful.
*******************************************************************************/
char I2C_Init(long clockFreq)
{
@ -279,13 +310,13 @@ char I2C_Init(long clockFreq)
/* Set transfer rate. */
wlValue = (unsigned char)((0.5 * fckFreq) / clockFreq);
whValue = (unsigned char)(wlValue - (fckFreq / (10 * clockFreq)));
IICWL0 = wlValue;
IICWH0 = whValue;
IICWL0 = wlValue;
IICWH0 = whValue;
STCEN0 = 1; // After operation is enabled, enable generation of a start
// condition without detecting a stop condition.
WTIM0 = 1; // Interrupt request is generated at the ninth clock’s
// falling edge.
STCEN0 = 1; // After operation is enabled, enable generation of a start
// condition without detecting a stop condition.
WTIM0 = 1; // Interrupt request is generated at the ninth clock’s
// falling edge.
/* Enable I2C operation. */
IICE0 = 1;
@ -294,21 +325,21 @@ char I2C_Init(long clockFreq)
P6 &= ~0x03;
PM6 &= ~0x03;
return 1;
return 0;
}
/***************************************************************************//**
* @brief Writes data to a slave device.
*
* @param slaveAddress - Adress of the slave device.
* @param dataBuffer - Pointer to a buffer storing the transmission data.
* @param bytesNumber - Number of bytes to write.
* @param stopBit - Stop condition control.
* Example: 0 - A stop condition will not be sent;
* 1 - A stop condition will be sent.
* @param dataBuffer - Pointer to a buffer storing the transmission data.
* @param bytesNumber - Number of bytes to write.
* @param stopBit - Stop condition control.
* Example: 0 - A stop condition will not be sent;
* 1 - A stop condition will be sent.
*
* @return status - Number of read bytes or 0xFF if the slave address was not
* acknowledged by the device.
* @return status - Number of read bytes or 0xFF if the slave address was
* not acknowledged by the device.
*******************************************************************************/
char I2C_Write(char slaveAddress,
unsigned char* dataBuffer,
@ -318,13 +349,13 @@ char I2C_Write(char slaveAddress,
char byte = 0;
char status = 0;
IICAMK0 = 1; // Interrupt servicing disabled.
STT0 = 1; // Generate a start condition.
IICAMK0 = 0; // Interrupt servicing enabled.
IICAMK0 = 1; // Interrupt servicing disabled.
STT0 = 1; // Generate a start condition.
IICAMK0 = 0; // Interrupt servicing enabled.
/* Send the first byte. */
IICA0_Flag = 0;
IICA0 = (slaveAddress << 1);
IICA0 = (slaveAddress << 1);
while(IICA0_Flag == 0);
if(ACKD0) // Acknowledge was detected.
@ -332,7 +363,7 @@ char I2C_Write(char slaveAddress,
for(byte = 0; byte < bytesNumber; byte++)
{
IICA0_Flag = 0;
IICA0 = *dataBuffer;
IICA0 = *dataBuffer;
while(IICA0_Flag == 0);
dataBuffer++;
}
@ -355,14 +386,14 @@ char I2C_Write(char slaveAddress,
* @brief Reads data from a slave device.
*
* @param slaveAddress - Adress of the slave device.
* @param dataBuffer - Pointer to a buffer that will store the received data.
* @param bytesNumber - Number of bytes to read.
* @param stopBit - Stop condition control.
* Example: 0 - A stop condition will not be sent;
* 1 - A stop condition will be sent.
* @param dataBuffer - Pointer to a buffer that will store the received data.
* @param bytesNumber - Number of bytes to read.
* @param stopBit - Stop condition control.
* Example: 0 - A stop condition will not be sent;
* 1 - A stop condition will be sent.
*
* @return status - Number of read bytes or 0xFF if the slave address was not
* acknowledged by the device.
* @return status - Number of read bytes or 0xFF if the slave address was
* not acknowledged by the device.
*******************************************************************************/
char I2C_Read(char slaveAddress,
unsigned char* dataBuffer,
@ -373,12 +404,12 @@ char I2C_Read(char slaveAddress,
char status = 0;
IICAMK0 = 1; // Interrupt servicing disabled.
STT0 = 1; // Generate a start condition.
STT0 = 1; // Generate a start condition.
IICAMK0 = 0; // Interrupt servicing enabled.
/* Send the first byte. */
IICA0_Flag = 0;
IICA0 = (slaveAddress << 1) + 1;
IICA0 = (slaveAddress << 1) + 1;
while(IICA0_Flag == 0);
if(ACKD0) // Acknowledge was detected.
@ -388,24 +419,24 @@ char I2C_Read(char slaveAddress,
{
if(byte == (bytesNumber - 1))
{
ACKE0 = 0U; // Disable acknowledgment.
ACKE0 = 0U; // Disable acknowledgment.
}
WREL0 = 1U; // Cancel wait.
IICA0_Flag = 0;
WREL0 = 1U; // Cancel wait.
IICA0_Flag = 0;
while(IICA0_Flag == 0);
*dataBuffer = IICA0;
dataBuffer++;
}
status = bytesNumber;
}
else // Acknowledge was not detected.
else // Acknowledge was not detected.
{
status = 0xFF;
status = 0xFF;
}
if(stopBit)
{
SPT0 = 1; // Generate a stop condition.
while(IICBSY0); // Wait until the I2C bus status flag is cleared.
SPT0 = 1; // Generate a stop condition.
while(IICBSY0); // Wait until the I2C bus status flag is cleared.
}
return status;

23
Communication.h
View file

@ -50,9 +50,26 @@
/******************************************************************************/
/*************************** Macros Definitions *******************************/
/******************************************************************************/
#define CS_PIN_LOW PMOD1_CS_LOW
#define CS_PIN_HIGH PMOD1_CS_HIGH
#define MISO_PIN PMOD1_MISO
#define SPI_CS_PIN_OUT PMOD1_CS_OUT
#define SPI_CS_LOW PMOD1_CS_LOW
#define SPI_CS_HIGH PMOD1_CS_HIGH
#define SPI_MISO PMOD1_MISO
#define GPIO1_PIN_OUT PMOD1_GPIO1_PIN_OUT
#define GPIO1_LOW PMOD1_GPIO1_LOW
#define GPIO1_HIGH PMOD1_GPIO1_HIGH
#define GPIO2_PIN_OUT PMOD1_GPIO2_PIN_OUT
#define GPIO2_LOW PMOD1_GPIO2_LOW
#define GPIO2_HIGH PMOD1_GPIO2_HIGH
#define GPIO3_PIN_OUT PMOD1_GPIO3_PIN_OUT
#define GPIO3_LOW PMOD1_GPIO3_LOW
#define GPIO3_HIGH PMOD1_GPIO3_HIGH
#define GPIO4_PIN_OUT PMOD1_GPIO4_PIN_OUT
#define GPIO4_LOW PMOD1_GPIO4_LOW
#define GPIO4_HIGH PMOD1_GPIO4_HIGH
/******************************************************************************/
/************************ Functions Declarations ******************************/

4
RDKRL78G14.c
View file

@ -37,7 +37,7 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************
* SVN Revision: 831
* SVN Revision: $WCREV$
*******************************************************************************/
/******************************************************************************/
@ -71,7 +71,7 @@ void RDKRL78G14_Reset(void)
*
* @return status - Result of the initialization procedure.
* Example: 0 - if initialization was successful;
* -1 - if initialization was unsuccessful.
* -1 - if initialization was unsuccessful.
*******************************************************************************/
char RDKRL78G14_Init(void)
{

46
RDKRL78G14.h
View file

@ -37,7 +37,7 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************
* SVN Revision: 831
* SVN Revision: $WCREV$
*******************************************************************************/
#ifndef __RDKRL78G14_H__
@ -88,7 +88,31 @@
/* PMOD1 MISO Pin */
#define PMOD1_MISO_PIN (1 << 1)
#define PMOD1_MISO ((P7 & PMOD1_MISO_PIN) >> 1)
#define PMOD1_MISO ((P7 & PMOD1_MISO_PIN) >> 1)
/* PMOD1 GPIO1 Pin - P47 */
#define PMOD1_GPIO1_PIN (1 << 7)
#define PMOD1_GPIO1_PIN_OUT PM4 &= ~PMOD1_GPIO1_PIN;
#define PMOD1_GPIO1_LOW P4 &= ~PMOD1_GPIO1_PIN;
#define PMOD1_GPIO1_HIGH P4 |= PMOD1_GPIO1_PIN;
/* PMOD1 GPIO2 Pin - P46 */
#define PMOD1_GPIO2_PIN (1 << 6)
#define PMOD1_GPIO2_PIN_OUT PM4 &= ~PMOD1_GPIO2_PIN;
#define PMOD1_GPIO2_LOW P4 &= ~PMOD1_GPIO2_PIN;
#define PMOD1_GPIO2_HIGH P4 |= PMOD1_GPIO2_PIN;
/* PMOD1 GPIO3 Pin - P110 */
#define PMOD1_GPIO3_PIN (1 << 0)
#define PMOD1_GPIO3_PIN_OUT PM11 &= ~PMOD1_GPIO3_PIN;
#define PMOD1_GPIO3_LOW P11 &= ~PMOD1_GPIO3_PIN;
#define PMOD1_GPIO3_HIGH P11 |= PMOD1_GPIO3_PIN;
/* PMOD1 GPIO4 Pin - P111 */
#define PMOD1_GPIO4_PIN (1 << 1)
#define PMOD1_GPIO4_PIN_OUT PM11 &= ~PMOD1_GPIO4_PIN;
#define PMOD1_GPIO4_LOW P11 &= ~PMOD1_GPIO4_PIN;
#define PMOD1_GPIO4_HIGH P11 |= PMOD1_GPIO4_PIN;
/* PMOD2 CS Pin - P82 */
#define PMOD2_CS_PIN (1 << 2)
@ -96,24 +120,6 @@
#define PMOD2_CS_LOW P8 &= ~PMOD2_CS_PIN
#define PMOD2_CS_HIGH P8 |= PMOD2_CS_PIN
/* GPIO1 Pin - P46 */
#define GPIO1_PIN (1 << 6)
#define GPIO1_PIN_OUT PM4 &= ~GPIO1_PIN;
#define GPIO1_PIN_LOW P4 &= ~GPIO1_PIN;
#define GPIO1_PIN_HIGH P4 |= GPIO1_PIN;
/* GPIO2 Pin - P110 */
#define GPIO2_PIN (1 << 0)
#define GPIO2_PIN_OUT PM11 &= ~GPIO2_PIN;
#define GPIO2_PIN_LOW P11 &= ~GPIO2_PIN;
#define GPIO2_PIN_HIGH P11 |= GPIO2_PIN;
/* GPIO3 Pin - P111 */
#define GPIO3_PIN (1 << 1)
#define GPIO3_PIN_OUT PM11 &= ~GPIO3_PIN;
#define GPIO3_PIN_LOW P11 &= ~GPIO3_PIN;
#define GPIO3_PIN_HIGH P11 |= GPIO3_PIN;
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/

44
ST7579.c
View file

@ -215,19 +215,19 @@ void ST7579_Clear(void)
* @brief Initializes the ST7579 controller.
*
* @return status - Result of the initialization procedure.
* Example: 1 - if initialization was successful;
* 0 - if initialization was unsuccessful.
* Example: 0 - if initialization was successful;
* -1 - if initialization was unsuccessful.
*******************************************************************************/
unsigned char ST7579_Init(void)
char ST7579_Init(void)
{
unsigned char status = 0;
char status = -1;
unsigned short delay = 0;
status = SPI_Init(0, // Transfer format.
1000000, // SPI clock frequency.
0, // SPI clock polarity.
1); // SPI clock edge.
if(status != 1)
if(status != 0)
{
return status;
}
@ -269,7 +269,7 @@ unsigned char ST7579_Init(void)
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param character - The character.
* @param bigFont - Big font selection.
* @param bigFont - Big font selection.
*
* @return None.
*******************************************************************************/
@ -337,8 +337,8 @@ void ST7579_Char(unsigned char yPosition,
*
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param string - The string.
* @param bigFont - Big font selection.
* @param string - The string.
* @param bigFont - Big font selection.
*
* @return None.
*******************************************************************************/
@ -360,8 +360,8 @@ void ST7579_String(unsigned char yPosition,
*
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param number - The number.
* @param bigFont - Big font selection.
* @param number - The number.
* @param bigFont - Big font selection.
*
* @return None.
*******************************************************************************/
@ -374,7 +374,6 @@ void ST7579_Number(unsigned char yPosition,
unsigned char chNumber = 10;
unsigned char chIndex = 0;
//bigFont = 0;
if(number < 0)
{
ST7579_Char(yPosition, xPosition, '-', bigFont);
@ -409,11 +408,11 @@ void ST7579_Number(unsigned char yPosition,
/***************************************************************************//**
* @brief Sends a float number to ST7579 controller.
*
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param number - The number.
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param number - The number.
* @param resolution - Float resolution.
* @param bigFont - Big font selection.
* @param bigFont - Big font selection.
*
* @return None.
*******************************************************************************/
@ -439,7 +438,7 @@ void ST7579_FloatNumber(unsigned char yPosition,
{
ST7579_Char(yPosition, xPosition, '-', bigFont);
xPosition += 6 + (bigFont * 12);
number *= -1;
display *= -1;
}
else
{
@ -458,6 +457,7 @@ void ST7579_FloatNumber(unsigned char yPosition,
ST7579_Char(yPosition, xPosition, '0', bigFont);
xPosition += 6 + (bigFont * 12);
}
return;
}
else
{
@ -465,7 +465,7 @@ void ST7579_FloatNumber(unsigned char yPosition,
xPosition += 6 + (bigFont * 12);
}
}
while(mask > display)
while((mask > display) && (chNumber > resolution))
{
mask /= 10;
chNumber--;
@ -493,8 +493,8 @@ void ST7579_FloatNumber(unsigned char yPosition,
*
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param number - The number.
* @param bigFont - Big font selection.
* @param number - The number.
* @param bigFont - Big font selection.
*
* @return None.
*******************************************************************************/
@ -541,9 +541,9 @@ void ST7579_HexNumber(unsigned char yPosition,
*
* @param yPosition - Y address of RAM.
* @param xPosition - X address of RAM.
* @param image - The image array.
* @param width - The width of the image (pixels).
* @param height - The height of the image (pixels).
* @param image - The image array.
* @param width - The width of the image (pixels).
* @param height - The height of the image (pixels).
*
* @return None.
*******************************************************************************/

2
ST7579.h
View file

@ -57,7 +57,7 @@ void ST7579_GoTo(unsigned char yPosition,
void ST7579_Clear(void);
/*! Initializes the ST7579 controller. */
unsigned char ST7579_Init(void);
char ST7579_Init(void);
/*! Sends a character to ST7579 controller. */
void ST7579_Char(unsigned char yPosition,

167
TIME.c Normal file
View file

@ -0,0 +1,167 @@
/***************************************************************************//**
* @file TIME.c
* @brief Implementation of TIME Driver for RENESAS RL78G14 Processor.
* @author Dan Nechita
********************************************************************************
* Copyright 2012(c) Analog Devices, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Analog Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* - The use of this software may or may not infringe the patent rights
* of one or more patent holders. This license does not release you
* from the requirement that you obtain separate licenses from these
* patent holders to use this software.
* - Use of the software either in source or binary form, must be run
* on or directly connected to an Analog Devices Inc. component.
*
* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************
* SVN Revision: $WCREV$
*******************************************************************************/
/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/
#include "RDKRL78G14.h" // RDKRL78G14 definitions.
#include "TIME.h" // TIME definitions.
/*****************************************************************************/
/************************** Macros Definitions *******************************/
/*****************************************************************************/
#define TIMER_CNT_INTERVAL 65536
/*****************************************************************************/
/************************ Variables Declarations *****************************/
/*****************************************************************************/
unsigned short overflowCounter = 0;
/******************************************************************************/
/************************ Functions Definitions *******************************/
/******************************************************************************/
/***************************************************************************//**
* @brief INTTM00 interrupt service routine.
*
* @return None.
*******************************************************************************/
#pragma vector = INTTM00_vect
__interrupt static void Timer0InterruptHandler(void)
{
overflowCounter++;
}
/***************************************************************************//**
* @brief Initializes the timer used in this driver.
*
* @return status - Result of the initialization procedure.
* Example: 0 - if initialization was successful;
* -1 - if initialization was unsuccessful.
*******************************************************************************/
char TIME_Init(void)
{
PER0 |= 0x0001; // Enable Supply for Unit 0 that contains timers 0..7.
TT0 |= 0x0001; // Stop channel 0(Timer 0).
TPS0 = 0x0005; // CK00 = FCLK / 32.
TMR00 |= 0x0000; // CK00 input clock for channel 0.
TMMK00 = 1; // Disable INTTM00 interrupt.
TMIF00 = 0; // Clear INTM00 interrupt flag.
/* Set INTTM00 low priority */
TMPR100 = 1;
TMPR000 = 1;
/* Configure channel 0 as a interval timer. */
TMR00 |= 0x0000; // Interval timer mode.
TO0 &= ~0x0001; // Timer 0 output value is "0".
TOE0 &= ~0x0001; // Disable output of timer 0.
TMMK00 = 0; // Enable INTTM00 interrupt.
return 0;
}
/***************************************************************************//**
* @brief The timer begins to count in steps of microseconds(us) until the user
* calls a stop measurement function.
*
* @return None.
*******************************************************************************/
void TIME_StartMeasure(void)
{
TDR00 = 0xFFFF;
overflowCounter = 0;
TS0 |= 0x0001; // Start timer 0.
TMIF00 = 0; // Clear INTM00 interrupt flag.
}
/***************************************************************************//**
* @brief Stops the measurement process when the functions is called.
*
* @return Time(in microseconds) elapsed since the measurement began.
*******************************************************************************/
unsigned long TIME_StopMeasure(void)
{
unsigned long elapsedUs = 0;
unsigned short timerCnt = 0;
timerCnt = TCR00;
TT0 |= 0x0001; // Stop Timer 0.
TMIF00 = 0; // Clear INTM00 interrupt flag.
overflowCounter = 0;
elapsedUs = ((unsigned long)overflowCounter * TIMER_CNT_INTERVAL) +
(0xFFFF - timerCnt);
return elapsedUs;
}
/***************************************************************************//**
* @brief Creates a delay of microseconds.
*
* @return None.
*******************************************************************************/
void TIME_DelayUs(unsigned short usUnits)
{
TDR00 = usUnits;
TS0 |= 0x0001; // Start timer 0.
while(!overflowCounter)
{
;
}
overflowCounter = 0;
TT0 |= 0x0001; // Stop Timer 0.
}
/***************************************************************************//**
* @brief Creates a delay of milliseconds.
*
* @return None.
*******************************************************************************/
void TIME_DelayMs(unsigned short msUnits)
{
TDR00 = 0x3E7; // 0x3E7 = 999(decimal). Timer will count down to 0.
TS0 |= 0x0001; // Start timer 0.
while(overflowCounter < msUnits)
{
;
}
overflowCounter = 0;
TT0 |= 0x0001; // Stop Timer 0.
}

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/***************************************************************************//**
* @file TIME.h
* @brief Header file of TIME Driver for RENESAS RL78G14 Processor.
* @author Dan Nechita
********************************************************************************
* Copyright 2012(c) Analog Devices, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Analog Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* - The use of this software may or may not infringe the patent rights
* of one or more patent holders. This license does not release you
* from the requirement that you obtain separate licenses from these
* patent holders to use this software.
* - Use of the software either in source or binary form, must be run
* on or directly connected to an Analog Devices Inc. component.
*
* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************
* SVN Revision: $WCREV$
*******************************************************************************/
#ifndef __TIME_H__
#define __TIME_H__
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/
/*! Initializes the timer used in this driver. */
char TIME_Init(void);
/*! The timer begins to count in steps of microseconds(us) until the user calls
a stop measurement function. */
void TIME_StartMeasure(void);
/*! Stops the measurement process when the functions is called. */
unsigned long TIME_StopMeasure(void);
/*! Creates a delay of microseconds. */
void TIME_DelayUs(unsigned short usUnits);
/*! Creates a delay of milliseconds. */
void TIME_DelayMs(unsigned short msUnits);
#endif /* __TIME_H__ */