Update README files
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configs
@ -115,6 +115,11 @@ Any of these options can be selected as the serial console by:
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2. Configuring the peripheral in the "Drivers -> Serial Configuration"
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2. Configuring the peripheral in the "Drivers -> Serial Configuration"
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menu.
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menu.
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NOTE: If USART1 is used (TXD1, RXD1), then PB4 must be reconfigured in the
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SUPC. Normally, PB4 is TDI. When it is reconfigured for use with USART1,
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the capability to debug is lost! If you plan to debug you should most
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certainly not use USARTs.
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SD Card
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SD Card
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=======
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=======
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@ -618,6 +623,11 @@ settings:
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CONFIG_SAMV7_USBHS_NDTDS=32 : Number of DMA transfer descriptors
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CONFIG_SAMV7_USBHS_NDTDS=32 : Number of DMA transfer descriptors
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CONFIG_SAMV7_USBHS_PREALLOCATE=y : Pre-allocate descriptors
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CONFIG_SAMV7_USBHS_PREALLOCATE=y : Pre-allocate descriptors
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As discussed in the SAMV71-XULT README, this driver will not work correctly
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if the write back data cache is enabled. You must have:
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CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
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In order to be usable, you must all enabled some class driver(s) for the
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In order to be usable, you must all enabled some class driver(s) for the
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USBHS device controller. Here, for example, is how to configure the CDC/ACM
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USBHS device controller. Here, for example, is how to configure the CDC/ACM
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serial device class:
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serial device class:
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@ -236,6 +236,11 @@ Any of these options can be selected as the serial console by:
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2. Configuring the peripheral in the "Drivers -> Serial Configuration"
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2. Configuring the peripheral in the "Drivers -> Serial Configuration"
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menu.
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menu.
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NOTE: If USART1 is used (TXD1, RXD1), then PB4 must be reconfigured in the
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SUPC. Normally, PB4 is TDI. When it is reconfigured for use with USART1,
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the capability to debug is lost! If you plan to debug you should most
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certainly not use USARTs.
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SD Card
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SD Card
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=======
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=======
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@ -938,9 +943,9 @@ settings:
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CONFIG_SAMV7_USBHS_PREALLOCATE=y : Pre-allocate descriptors
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CONFIG_SAMV7_USBHS_PREALLOCATE=y : Pre-allocate descriptors
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As noted above, this driver will not work correctly if the write back
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As noted above, this driver will not work correctly if the write back
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data cache is enable:
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data cache is enabled. You must have:
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CONFIG_ARMV7M_DCACHE_WRITETHROUGH=n
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CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
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In order to be usable, you must all enabled some class driver(s) for the
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In order to be usable, you must all enabled some class driver(s) for the
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USBHS device controller. Here, for example, is how to configure the CDC/ACM
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USBHS device controller. Here, for example, is how to configure the CDC/ACM
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