bit band

[prabk4u2004]

Posted on February 07, 2015 at 12:43

dear all

I am trying to write a code on bit banding, is there any one can help me with an example coderegards  

[Tesla DeLorean]

Posted on February 07, 2015 at 13:15

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Have you tried reviewing the ARM documentation, and one of Joseph Yiu's books on the M3 or M4?

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0179b/CHDJHIDF.html

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0337e/Behcjiic.html

// prepare bit-banding
#define PERIPH_BB_BASE ((uint32_t)0x42000000) /*!< Peripheral base address in the bit-band region */
#define PERIPH_BASE ((uint32_t)0x40000000) /*!< Peripheral base address in the alias region */
#define BITBAND_PERIPH(address, bit) ((__IO uint32_t *)(PERIPH_BB_BASE + (((uint32_t)address) - PERIPH_BASE) * 32 + (bit) * 4))