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First version of I2C test

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git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@278 ebee16cc-31ac-478f-84a7-5cbb03baadba
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FredericG 2010-03-10 21:05:19 +00:00 committed by FredericG
parent 3489b0c2ab
commit 964c1e5983
1 changed files with 138 additions and 0 deletions
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flight/OpenPilot/Tests/test_i2c_PCF8570.c Normal file
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/**
******************************************************************************
*
* @file openpilot.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief Sets up ans runs main OpenPilot tasks.
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* I2C Test: communicate with external PCF8570 ram chip
* For this test to function, PCF8570 chips need to be attached to the I2C port
*
* Blinking Blue LED: No errors detected, test continues
* Blinking Red LED: Error detected, test stopped
*
*/
/* OpenPilot Includes */
#include "openpilot.h"
/* Task Priorities */
#define PRIORITY_TASK_HOOKS (tskIDLE_PRIORITY + 3)
/* Global Variables */
/* Local Variables */
/* Function Prototypes */
static void TestTask(void *pvParameters);
/**
* OpenPilot Main function
*/
int main()
{
// Init
PIOS_SYS_Init();
PIOS_DEBUG_Init();
PIOS_DELAY_Init();
PIOS_COM_Init();
PIOS_USB_Init(0);
PIOS_I2C_Init();
// Create task
xTaskCreate(TestTask, (signed portCHAR *)"Test", configMINIMAL_STACK_SIZE , NULL, 1, NULL);
// Start the FreeRTOS scheduler
vTaskStartScheduler();
/* If all is well we will never reach here as the scheduler will now be running. */
/* If we do get here, it will most likely be because we ran out of heap space. */
return 0;
}
static void OnError(void)
{
PIOS_LED_Off(LED1);
while(1)
{
PIOS_LED_Toggle(LED2);
vTaskDelay(50 / portTICK_RATE_MS);
}
}
static void TestTask(void *pvParameters)
{
int i = 0;
portTickType xLastExecutionTime;
// Both leds off
PIOS_LED_Off(LED1);
PIOS_LED_Off(LED2);
xLastExecutionTime = xTaskGetTickCount();
PIOS_I2C_Transfer(I2C_Write, 0x50<<1, (uint8_t*)"\x20\xB0\xB1\xB2", 4);
for(;;)
{
i++;
if (i==100)
{
PIOS_LED_Toggle(LED1);
i = 0;
}
{
uint8_t buf[20];
PIOS_I2C_Transfer(I2C_Write, 0x50<<1, (uint8_t*)"\x10\xA0\xA1\xA2", 4);
PIOS_I2C_Transfer(I2C_Write_WithoutStop, 0x50<<1, (uint8_t*)"\x20", 1);
PIOS_I2C_Transfer(I2C_Read, 0x50<<1, buf, 3);
PIOS_I2C_TransferWait();
if (memcmp(buf, "\xB0\xB1\xB2",3) != 0)
OnError();
PIOS_I2C_Transfer(I2C_Write_WithoutStop, 0x50<<1, (uint8_t*)"\x10", 1);
PIOS_I2C_Transfer(I2C_Read, 0x50<<1, buf, 3);
PIOS_I2C_TransferWait();
if (memcmp(buf, "\xA0\xA1\xA2",3) != 0)
OnError();
}
//vTaskDelayUntil(&xLastExecutionTime, 10 / portTICK_RATE_MS);
}
}
/**
* Idle hook function
*/
void vApplicationIdleHook(void)
{
/* Called when the scheduler has no tasks to run */
}