From 9f95ff5b6ba01db09552b84a0ab79607060a2666 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Wed, 11 Dec 2019 08:59:21 +0100 Subject: Official ARM version: v5.4.0 Add CMSIS V5.4.0, please refer to index.html available under \docs folder. Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure used in existing projects, and thus avoid projects mass update Note: the following components have been removed from ARM original delivery (as not used in ST packages) - CMSIS_EW2018.pdf - .gitattributes - .gitignore - \Device - \CMSIS - \CoreValidation - \DAP - \Documentation - \DoxyGen - \Driver - \Pack - \RTOS\CMSIS_RTOS_Tutorial.pdf - \RTOS\RTX - \RTOS\Template - \RTOS2\RTX - \Utilities - All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2 Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3 --- .../html/group__mci__bus__data__width__ctrls.html | 228 +++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 docs/Driver/html/group__mci__bus__data__width__ctrls.html (limited to 'docs/Driver/html/group__mci__bus__data__width__ctrls.html') diff --git a/docs/Driver/html/group__mci__bus__data__width__ctrls.html b/docs/Driver/html/group__mci__bus__data__width__ctrls.html new file mode 100644 index 0000000..dab9a2a --- /dev/null +++ b/docs/Driver/html/group__mci__bus__data__width__ctrls.html @@ -0,0 +1,228 @@ + + + + + +MCI Bus Data Width +CMSIS-Driver: MCI Bus Data Width + + + + + + + + + + + + + + +
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CMSIS-Driver +  Version 2.6.0 +
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Peripheral Interface for Middleware and Application Code
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MCI Bus Data Width
MCI Control Codes
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Specify the data bus width. +More...

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#define ARM_MCI_BUS_DATA_WIDTH_1   (0x00)
 Bus data width: 1 bit (default) More...
 
#define ARM_MCI_BUS_DATA_WIDTH_4   (0x01)
 Bus data width: 4 bits. More...
 
#define ARM_MCI_BUS_DATA_WIDTH_8   (0x02)
 Bus data width: 8 bits. More...
 
#define ARM_MCI_BUS_DATA_WIDTH_4_DDR   (0x03)
 Bus data width: 4 bits, DDR (Dual Data Rate) - MMC only. More...
 
#define ARM_MCI_BUS_DATA_WIDTH_8_DDR   (0x04)
 Bus data width: 8 bits, DDR (Dual Data Rate) - MMC only. More...
 
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Description

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Specify the data bus width.

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The function ARM_MCI_Control with control = ARM_MCI_BUS_DATA_WIDTH specifies with arg the number of data I/O pins on the SD/MMC interface.

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For high-speed memory cards, a 4-bit bus data width should be used (or 8-bit for eMMC). The data fields data_width_4 and data_width_8 of the structure ARM_MCI_CAPABILITIES encode whether the driver supports a specific bus data with.

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The following codes are defined:

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Macro Definition Documentation

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#define ARM_MCI_BUS_DATA_WIDTH_1   (0x00)
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Bus data width: 1 bit (default)

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#define ARM_MCI_BUS_DATA_WIDTH_4   (0x01)
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Bus data width: 4 bits.

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#define ARM_MCI_BUS_DATA_WIDTH_8   (0x02)
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Bus data width: 8 bits.

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#define ARM_MCI_BUS_DATA_WIDTH_4_DDR   (0x03)
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Bus data width: 4 bits, DDR (Dual Data Rate) - MMC only.

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#define ARM_MCI_BUS_DATA_WIDTH_8_DDR   (0x04)
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Bus data width: 8 bits, DDR (Dual Data Rate) - MMC only.

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