[ 0.000000] Memory policy: Data cache writealloc [ 0.000000] Reserved memory: created CMA memory pool at 0x000000002ac00000, size 64 MiB [ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool [ 0.000000] On node 0 totalpages: 504832 [ 0.000000] DMA zone:...
... [ 110.648332] uart-pl011 20201000.serial: no DMA platform data [ 110.699913] Bluetooth: HCI UART driver ver 2.3 [ 110.699938] Bluetooth: HCI UART protocol H4 registered [ 110.699944] Bluetooth: HCI UART protocol Three-wire (H5) registered [ 110.700199] Bluetooth: HCI UART protocol Broadcom...
char*, unsigned);structtty_driver *(*device)(structconsole *,int*);void(*unblank)(void);int(*setup)(structconsole *,char*);int(*match)(structconsole *,char*name,intidx,char*options);shortflags;shortindex;intcflag;void*data;structconsole *next;...
data->data.dma.rxconf.src_maxburst=p->fifosize/4; data->data.dma.txconf.dst_maxburst=p->fifosize/4; up->dma=&data->data.dma; } data->data.line=serial8250_register_8250_port(up); if(data->data.line< 0) return data->data.line; /* *Someplatformsmayprovideareferenceclocksharedbet...
UART asynchronous method is set to work using interrupts as opposed to DMA. This method dictates how the mechanism for the functionsAsyncSendandAsyncReceiveworks. More will be discussed in chapter 3. Other settings here include:Desire Baudrate(115200 bps),Uart Parity Type,Uar...
UART_MODE_DMA_TX_DIS DMA disabled for data transmitting Function UartClose() void UartClose (DevHandle handle) Description: Releases the UART device handle. If you no longer need to access the UART device, you should call this function to close its handle so as to release unused memory ...
我参照这份文件(第 36 页)将 UART 配置为 115200 波特率。 在我的 putty 终端上没有获得所需的输出(我可以看到连续显示的垃圾信息) https://www.infineon.com/dgdl/Infineon-AN225401_How_to_Use_Serial_Communications_Block_(SCB)_in_Trav... 仅供参考。 这是我对 Cy_SysClk_PeriphSetFracDivider 函数的...
如果需要 UART 支持 DMA 传输,则可以打开 SUNXI UART USE DMA 选项。 3.2 device tree 源码结构和路径 •设备树文件的配置是该 SoC 所有方案的通用配置,对于 ARM64 CPU 而言,设备树的路径为内核目录下:arch/arm64/boot/dts/sunxi/sun*.dtsi。 •设备树文件的配置是该 SoC 所有方案的通用配置,对于 ARM32 ...
1./sys/devices/platform/soc/uart0/dev_info cupid-p2:/ # cat /sys/devices/platform/soc/uart0/dev_info id = 0 name = uart0 irq = 247 io_num = 2 port->mapbase = 0x0000000005000000 port->membase = 0xffffff800b005000 port->iobase = 0x00000000 pdata->regulator = 0x (null) pdata...
1./sys/devices/platform/soc/uart0/dev_info cupid-p2:/ # cat /sys/devices/platform/soc/uart0/dev_info id = 0 name = uart0 irq = 247 io_num = 2 port->mapbase = 0x0000000005000000 port->membase = 0xffffff800b005000 port->iobase = 0x00000000 pdata->regulator = 0x (null) pdata...