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Code Issues Releases Activity

OP-377 PiOS/BMP085 - Update BMP085 driver to be FreeRTOS agnostic. This is required since new INS does not run FreeRTOS.

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git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@3160 ebee16cc-31ac-478f-84a7-5cbb03baadba
This commit is contained in:
chebuzz 2011-04-14 09:46:23 +00:00 committed by chebuzz
parent a893cd99da
commit 195e93c0d6
3 changed files with 47 additions and 3 deletions
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2
flight/PiOS/Boards/STM3210E_OP.h
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@ -146,6 +146,8 @@ extern uint32_t pios_i2c_main_adapter_id;
#define PIOS_BMP085_EOC_EXTI_LINE EXTI_Line15
#define PIOS_BMP085_EOC_IRQn EXTI15_10_IRQn
#define PIOS_BMP085_EOC_PRIO PIOS_IRQ_PRIO_LOW
#define PIOS_BMP085_XCLR_GPIO_PORT GPIOC // Not actually connected on OP mainboard
#define PIOS_BMP085_XCLR_GPIO_PIN GPIO_Pin_14 // Not actually connected on OP mainboard
//#define PIOS_BMP085_OVERSAMPLING 2
#define PIOS_BMP085_OVERSAMPLING 3

47
flight/PiOS/Common/pios_bmp085.c
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@ -34,11 +34,15 @@
#if defined(PIOS_INCLUDE_BMP085)
#if !defined(PIOS_INCLUDE_EXTI)
#error PIOS_EXTI Must be included in the project!
#endif
#endif /* PIOS_INCLUDE_EXTI */
/* Glocal Variables */
ConversionTypeTypeDef CurrentRead;
#if defined(PIOS_INCLUDE_FREERTOS)
xSemaphoreHandle PIOS_BMP085_EOC;
#else
int32_t PIOS_BMP085_EOC;
#endif
/* Local Variables */
static BMP085CalibDataTypeDef CalibData;
@ -60,10 +64,14 @@ void PIOS_BMP085_Init(void)
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
#if defined(PIOS_INCLUDE_FREERTOS)
/* Semaphore used by ISR to signal End-Of-Conversion */
vSemaphoreCreateBinary(PIOS_BMP085_EOC);
/* Must start off empty so that first transfer waits for EOC */
xSemaphoreTake(PIOS_BMP085_EOC, portMAX_DELAY);
#else
PIOS_BMP085_EOC = 0;
#endif
/* Enable EOC GPIO clock */
RCC_APB2PeriphClockCmd(PIOS_BMP085_EOC_CLK | RCC_APB2Periph_AFIO, ENABLE);
@ -88,7 +96,12 @@ void PIOS_BMP085_Init(void)
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Read all 22 bytes of calibration data in one transfer, this is a very optimised way of doing things */
/* Configure XCLR pin as push/pull alternate funtion output */
GPIO_InitStructure.GPIO_Pin = PIOS_BMP085_XCLR_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(PIOS_BMP085_XCLR_GPIO_PORT, &GPIO_InitStructure);
/* Read all 22 bytes of calibration data in one transfer, this is a very optimized way of doing things */
uint8_t Data[BMP085_CALIB_LEN];
while (!PIOS_BMP085_Read(BMP085_CALIB_ADDR, Data, BMP085_CALIB_LEN))
continue;
@ -254,4 +267,32 @@ bool PIOS_BMP085_Write(uint8_t address, uint8_t buffer)
return PIOS_I2C_Transfer(PIOS_I2C_MAIN_ADAPTER, txn_list, NELEMENTS(txn_list));
}
#endif
/**
* @brief Run self-test operation.
* \return 0 if self-test failed
* \return any non-0 number if test passed
*/
int32_t PIOS_BMP085_Test()
{
// TODO: Is there a better way to test this than just checking that pressure/temperature has changed?
int32_t passed = 1;
int32_t cur_value = 0;
cur_value = Temperature;
PIOS_BMP085_StartADC(TemperatureConv);
PIOS_DELAY_WaitmS(5);
PIOS_BMP085_ReadADC();
if (cur_value == Temperature)
passed = 0;
cur_value=Pressure;
PIOS_BMP085_StartADC(PressureConv);
PIOS_DELAY_WaitmS(26);
PIOS_BMP085_ReadADC();
if (cur_value == Pressure)
passed = 0;
return passed;
}
#endif /* PIOS_INCLUDE_BMP085 */

1
flight/PiOS/inc/pios_bmp085.h
View File

@ -77,6 +77,7 @@ extern int16_t PIOS_BMP085_GetTemperature(void);
extern int32_t PIOS_BMP085_GetPressure(void);
extern bool PIOS_BMP085_Read(uint8_t address, uint8_t * buffer, uint8_t len);
extern bool PIOS_BMP085_Write(uint8_t address, uint8_t buffer);
extern int32_t PIOS_BMP085_Test();
#endif /* PIOS_BMP085_H */