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0b26e669af
* Removing USB Need to refine the drive to the iron tip * Update README.md * * Rewrite all code from scratch * Only kept settings * New font * New PID * New Menus * Use Hardware I2C * Faster System * Better Heating Time * No USB * Full Menu System
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/*
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* MMA8652FC.*
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* Files for the built in accelerometer from NXP.
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* This sets the unit up in motion detection mode with an interrupt on movement
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* This interrupt is fed to PB5 which catches it via EXTI5
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*
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* http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8652FC.pdf
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*
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* EXTI Motion config setup values lifted from AN4070from NXP
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*
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* Ben V. Brown - <ralim@ralimtek.com>
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*/
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#include <stdio.h>
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#include "Bios.h"
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#include "MMA8652FC.h"
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#include "I2C.h"
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void I2C_RegisterWrite(uint8_t reg, uint8_t data) {
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u8 tx_data[2];
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tx_data[0] = reg;
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tx_data[1] = data;
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I2C_PageWrite(tx_data, 2, DEVICE_ADDR);
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}
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uint8_t I2C_RegisterRead(uint8_t reg) {
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u8 tx_data[3];
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tx_data[0] = reg;
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I2C_PageRead(tx_data, 1, DEVICE_ADDR, reg);
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return tx_data[0];
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}
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void StartUp_Accelerometer(void) {
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I2C_RegisterWrite(CTRL_REG2, 0); //Normal mode
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I2C_RegisterWrite( CTRL_REG2, 0x40); // Reset all registers to POR values
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delayMs(2); // ~1ms delay
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I2C_RegisterWrite(FF_MT_CFG_REG, 0x78); // Enable motion detection for X and Y axis, latch enabled
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I2C_RegisterWrite(FF_MT_THS_REG, 0x0F); // Set threshold
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I2C_RegisterWrite(FF_MT_COUNT_REG, 0x01); // Set debounce to 100ms
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I2C_RegisterWrite( CTRL_REG4, 0x04); // Enable motion interrupt
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I2C_RegisterWrite( CTRL_REG5, 0x04);// Route motion interrupts to INT1 ->PB5 ->EXTI
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I2C_RegisterWrite( CTRL_REG1, 0x19); // ODR=100 Hz, Active mode
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}
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