千辛万苦调试，只剩最后一步LCD驱动不起来

how0723 · 2021-12-12 19:43:59

入手licheepi zero有几天了，这几天千辛万苦调试，只剩最后一步LCD驱动不起来
使用了sun8i-v3s-licheepi-zero-dock.dts的设置
进入u-boot时能显示企鹅图标和一行英文
进入kernel后，只有一个光标在左上角闪
运行demo，原本应该显示一个lvgl的demo，结果显示花屏，图片如下
QQ截图20211212194228.png

QQ截图20211212204159.png

启动日志如下

U-Boot SPL 2017.01-rc2-00073-gdd6e8740dc-dirty (Dec 12 2021 - 18:47:39)
DRAM: 64 MiB
Trying to boot from sunxi SPI

U-Boot 2017.01-rc2-00073-gdd6e8740dc-dirty (Dec 12 2021 - 18:47:39 +0800) Allwinner Technology

CPU:   Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM:  64 MiB
MMC:   SUNXI SD/MMC: 0
SF: Detected xt25f128b with page size 256 Bytes, erase size 64 KiB, total 16 MiB
*** Warning - bad CRC, using default environment

Setting up a 480x272 lcd console (overscan 0x0)
dotclock: 10000kHz = 10000kHz: (1 * 3MHz * 20) / 6
In:    serial@01c28000
Out:   serial@01c28000
Err:   serial@01c28000


U-Boot 2017.01-rc2-00073-gdd6e8740dc-dirty (Dec 12 2021 - 18:47:39 +0800) Allwinner Technology

CPU:   Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM:  64 MiB
MMC:   SUNXI SD/MMC: 0
SF: Detected xt25f128b with page size 256 Bytes, erase size 64 KiB, total 16 MiB
*** Warning - bad CRC, using default environment

Setting up a 480x272 lcd console (overscan 0x0)
dotclock: 10000kHz = 10000kHz: (1 * 3MHz * 20) / 6
In:    serial@01c28000
Out:   serial@01c28000
Err:   serial@01c28000
Net:   No ethernet found.
starting USB...
No controllers found
Hit any key to stop autoboot:  0
SF: Detected xt25f128b with page size 256 Bytes, erase size 64 KiB, total 16 MiB
device 0 offset 0x100000, size 0x10000
SF: 65536 bytes @ 0x100000 Read: OK
device 0 offset 0x110000, size 0x400000
SF: 4194304 bytes @ 0x110000 Read: OK
## Flattened Device Tree blob at 41800000
   Booting using the fdt blob at 0x41800000
   Loading Device Tree to 42dfa000, end 42dffed9 ... OK

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.13.16-licheepi-zero+ (yehao@ubuntu) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05)) #7 SMP Sun Dec 12 17:14:38 CST 2021
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Lichee Pi Zero with Dock
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] percpu: Embedded 16 pages/cpu @c3edf000 s33868 r8192 d23476 u65536
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16129
[    0.000000] Kernel command line: console=ttyS0,115200 earlyprintk panic=5 rootwait  mtdparts=spi32766.0:1M(uboot)ro,64k(dtb)ro,4M(kernel)ro,-(rootfs) root=31:03 rw rootfstype=jffs2
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Memory: 54568K/65024K available (6144K kernel code, 217K rwdata, 1456K rodata, 1024K init, 264K bss, 10456K reserved, 0K cma-reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xc4000000 - 0xff800000   ( 952 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xc3f80000   (  63 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc0700000   (7136 kB)
[    0.000000]       .init : 0xc0900000 - 0xc0a00000   (1024 kB)
[    0.000000]       .data : 0xc0a00000 - 0xc0a367c0   ( 218 kB)
[    0.000000]        .bss : 0xc0a3daf0 - 0xc0a7fcac   ( 265 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU event tracing is enabled.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000009] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000021] Switching to timer-based delay loop, resolution 41ns
[    0.000182] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000412] Console: colour dummy device 80x30
[    0.000446] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.000460] pid_max: default: 32768 minimum: 301
[    0.000588] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000601] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.001183] CPU: Testing write buffer coherency: ok
[    0.001549] /cpus/cpu@0 missing clock-frequency property
[    0.001572] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.002003] Setting up static identity map for 0x40100000 - 0x40100060
[    0.002176] Hierarchical SRCU implementation.
[    0.002689] smp: Bringing up secondary CPUs ...
[    0.002702] smp: Brought up 1 node, 1 CPU
[    0.002712] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[    0.002718] CPU: All CPU(s) started in SVC mode.
[    0.003481] devtmpfs: initialized
[    0.006597] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.006889] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.006915] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.007079] pinctrl core: initialized pinctrl subsystem
[    0.007938] random: get_random_u32 called from bucket_table_alloc+0xf4/0x244 with crng_init=0
[    0.008074] NET: Registered protocol family 16
[    0.008541] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.009644] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.009662] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.022894] SCSI subsystem initialized
[    0.023194] usbcore: registered new interface driver usbfs
[    0.023259] usbcore: registered new interface driver hub
[    0.023351] usbcore: registered new device driver usb
[    0.023595] pps_core: LinuxPPS API ver. 1 registered
[    0.023605] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.023629] PTP clock support registered
[    0.023860] Advanced Linux Sound Architecture Driver Initialized.
[    0.025695] clocksource: Switched to clocksource arch_sys_counter
[    0.036473] NET: Registered protocol family 2
[    0.037048] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.037082] TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
[    0.037108] TCP: Hash tables configured (established 1024 bind 1024)
[    0.037234] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.037283] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.037497] NET: Registered protocol family 1
[    0.038071] RPC: Registered named UNIX socket transport module.
[    0.038088] RPC: Registered udp transport module.
[    0.038095] RPC: Registered tcp transport module.
[    0.038101] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.040188] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.049069] NFS: Registering the id_resolver key type
[    0.049118] Key type id_resolver registered
[    0.049125] Key type id_legacy registered
[    0.049169] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    0.050670] random: fast init done
[    0.053542] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    0.053562] io scheduler noop registered
[    0.053571] io scheduler deadline registered
[    0.053847] io scheduler cfq registered (default)
[    0.053859] io scheduler mq-deadline registered
[    0.053865] io scheduler kyber registered
[    0.058105] sun8i-v3s-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.127012] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.130221] console [ttyS0] disabled
[    0.150490] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 36, base_baud = 1500000) is a U6_16550A
[    0.739555] console [ttyS0] enabled
[    0.747600] m25p80 spi32766.0: xt25f128b (16384 Kbytes)
[    0.752854] spi32766.0: parser cmdlinepart: 4
[    0.757292] 4 cmdlinepart partitions found on MTD device spi32766.0
[    0.763554] Creating 4 MTD partitions on "spi32766.0":
[    0.768717] 0x000000000000-0x000000100000 : "uboot"
[    0.774224] 0x000000100000-0x000000110000 : "dtb"
[    0.779450] 0x000000110000-0x000000510000 : "kernel"
[    0.784765] 0x000000510000-0x000001000000 : "rootfs"
[    0.790613] libphy: Fixed MDIO Bus: probed
[    0.795210] dwmac-sun8i 1c30000.ethernet: PTP uses main clock
[    0.801095] dwmac-sun8i 1c30000.ethernet: No regulator found
[    0.806836] dwmac-sun8i 1c30000.ethernet: Will use internal PHY
[    0.812990] dwmac-sun8i 1c30000.ethernet: Chain mode enabled
[    0.818695] dwmac-sun8i 1c30000.ethernet: No HW DMA feature register supported
[    0.825929] dwmac-sun8i 1c30000.ethernet: Normal descriptors
[    0.831582] dwmac-sun8i 1c30000.ethernet: RX Checksum Offload Engine supported
[    0.838808] dwmac-sun8i 1c30000.ethernet: COE Type 2
[    0.843767] dwmac-sun8i 1c30000.ethernet: TX Checksum insertion supported
[    0.850738] libphy: stmmac: probed
[    0.856185] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.862723] ehci-platform: EHCI generic platform driver
[    0.868291] ehci-platform 1c1a000.usb: EHCI Host Controller
[    0.873906] ehci-platform 1c1a000.usb: new USB bus registered, assigned bus number 1
[    0.881872] ehci-platform 1c1a000.usb: irq 26, io mem 0x01c1a000
[    0.915713] ehci-platform 1c1a000.usb: USB 2.0 started, EHCI 1.00
[    0.922960] hub 1-0:1.0: USB hub found
[    0.926907] hub 1-0:1.0: 1 port detected
[    0.931424] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.937720] ohci-platform: OHCI generic platform driver
[    0.943290] ohci-platform 1c1a400.usb: Generic Platform OHCI controller
[    0.950036] ohci-platform 1c1a400.usb: new USB bus registered, assigned bus number 2
[    0.957990] ohci-platform 1c1a400.usb: irq 27, io mem 0x01c1a400
[    1.030835] hub 2-0:1.0: USB hub found
[    1.034653] hub 2-0:1.0: 1 port detected
[    1.042275] udc-core: couldn't find an available UDC - added [g_cdc] to list of pending drivers
[    1.051858] input: 1c22800.lradc as /devices/platform/soc/1c22800.lradc/input/input0
[    1.060770] sun6i-rtc 1c20400.rtc: rtc core: registered rtc-sun6i as rtc0
[    1.067678] sun6i-rtc 1c20400.rtc: RTC enabled
[    1.072217] i2c /dev entries driver
[    1.077062] input: ns2009_ts as /devices/platform/soc/1c2ac00.i2c/i2c-0/0-0048/input/input1
[    1.086550] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[    1.155746] sunxi-mmc 1c0f000.mmc: base:0xc407b000 irq:23
[    1.215732] sunxi-mmc 1c10000.mmc: base:0xc4144000 irq:24
[    1.222137] usbcore: registered new interface driver usbhid
[    1.227791] usbhid: USB HID core driver
[    1.233237] sun4i-codec 1c22c00.codec: ASoC: /soc/codec-analog@01c23000 not registered
[    1.241274] sun4i-codec 1c22c00.codec: Failed to register our card
[    1.248734] NET: Registered protocol family 17
[    1.253306] Key type dns_resolver registered
[    1.257839] Registering SWP/SWPB emulation handler
[    1.270237] simple-framebuffer 43f80000.framebuffer: framebuffer at 0x43f80000, 0x7f800 bytes, mapped to 0xc4300000
[    1.280863] simple-framebuffer 43f80000.framebuffer: format=x8r8g8b8, mode=480x272x32, linelength=1920
[    1.293139] Console: switching to colour frame buffer device 60x34
[    1.301598] simple-framebuffer 43f80000.framebuffer: fb0: simplefb registered!
[    1.310153] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[    1.321512] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[    1.327358] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 3
[    1.336586] hub 3-0:1.0: USB hub found
[    1.340470] hub 3-0:1.0: 1 port detected
[    1.345530] using random self ethernet address
[    1.350089] using random host ethernet address
[    1.355641] usb0: HOST MAC da:57:2c:74:80:fd
[    1.360062] usb0: MAC de:06:b8:44:88:b1
[    1.363944] g_cdc gadget: CDC Composite Gadget, version: King Kamehameha Day 2008
[    1.371460] g_cdc gadget: g_cdc ready
[    1.377779] sun4i-codec 1c22c00.codec: Codec <-> 1c22c00.codec mapping ok
[    1.387506] sun6i-rtc 1c20400.rtc: setting system clock to 1970-01-01 01:27:11 UTC (5231)
[    1.395987] vcc3v3: disabling
[    1.398960] vcc5v0: disabling
[    1.401924] ALSA device list:
[    1.404886]   #0: V3s Audio Codec
[    1.447975] random: crng init done
[    2.571907] VFS: Mounted root (jffs2 filesystem) on device 31:3.
[    2.578906] devtmpfs: mounted
[    2.583092] Freeing unused kernel memory: 1024K
[    3.492235] g_cdc gadget: high-speed config #1: CDC Composite (ECM + ACM)
Starting logging: OK
Initializing random number generator... done.
Starting network: OK

Welcome to Bairen
bairen login:

最近编辑记录 how0723 (2021-12-12 20:42:41)

cube · 2021-12-12 21:16:20

你的屏幕分辨率是多少呢？

how0723 · 2021-12-12 21:29:11

cube 说：

你的屏幕分辨率是多少呢？

480*272

哇酷小二 · 2021-12-12 21:31:50

企鹅头像正常吗？

光标正常吗？

如果都正常，说明很可能你的 lvgl app 设置的分辨率不是 480*272。

how0723 · 2021-12-12 21:41:44

哇酷小二说：

企鹅头像正常吗？
光标正常吗？
如果都正常，说明很可能你的 lvgl app 设置的分辨率不是 480*272。

lvgl app 设置的分辨率可能不是 480*272，具体要查一下
企鹅头像正常，光标正常，但是用echo 0 > /sys/class/graphics/fb0/blank 会失败

how0723 · 2021-12-12 21:42:17

哇酷小二说：

企鹅头像正常吗？
光标正常吗？
如果都正常，说明很可能你的 lvgl app 设置的分辨率不是 480*272。

有没有其他简单的测试方法？

哇酷小二 · 2021-12-12 21:43:22

buildroot 勾选 fbv 看图，或者 fb-test 测试程序可以测试lcd framebuffer

how0723 · 2021-12-12 21:44:49

哇酷小二说：

buildroot 勾选 fbv 看图，或者 fb-test 测试程序可以测试lcd framebuffer

谢谢，我测试一下看看

资本家大善人 · 2021-12-12 21:55:27

试试这个程序？
armgcc编译弄到板子上运行

#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <linux/fb.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <stdlib.h>
static int fd_fb;
static struct fb_var_screeninfo var;	/* Current var */
static struct fb_fix_screeninfo  finfo;
static int screen_size;
static unsigned char *fb_base;
static unsigned int line_width;
static unsigned int pixel_width;

/**********************************************************************
 * 函数名称： lcd_put_pixel
 * 功能描述： 在LCD指定位置上输出指定颜色（描点）
 * 输入参数： x坐标，y坐标，颜色
 * 输出参数： 无
 * 返 回 值： 会
 * 修改日期        版本号     修改人	      修改内容
 * -----------------------------------------------
 * 2020/05/12	     V1.0	  zh(angenao)	      创建
 ***********************************************************************/ 
void lcd_put_pixel(int x, int y, unsigned int color)
{
	unsigned char *pen_8 = fb_base+y*line_width+x*pixel_width;
	unsigned short *pen_16;	
	unsigned int *pen_32;	

	unsigned int red, green, blue;	

	pen_16 = (unsigned short *)pen_8;
	pen_32 = (unsigned int *)pen_8;

	switch (var.bits_per_pixel)
	{
		case 8:
		{
			*pen_8 = color;
			break;
		}
		case 16:
		{
			/* 565 */
			red   = (color >> 16) & 0xff;
			green = (color >> 8) & 0xff;
			blue  = (color >> 0) & 0xff;
			color = ((red >> 3) << 11) | ((green >> 2) << 5) | (blue >> 3);
			*pen_16 = color;
			break;
		}
		case 24:
		{
			*pen_32=color;
			break;
		}
		case 32:
		{
			*pen_32 = color;
			break;
		}
		default:
		{
			printf("can't surport %dbpp\n", var.bits_per_pixel);
			break;
		}
	}
}

int main(int argc, char **argv)
{
	int i,j;
	
	fd_fb = open("/dev/fb0", O_RDWR);
	if (fd_fb < 0)
	{
		printf("can't open /dev/fb0\n");
		return -1;
	}
	if (ioctl(fd_fb, FBIOGET_VSCREENINFO, &var))
	{
		printf("can't get var\n");
		return -1;
	}
    if (ioctl(fd_fb,FBIOGET_FSCREENINFO,&finfo))
    {
        printf("Error reading fixed information\n");
        exit(-1);
	}
     //显示结构体信息
  	 printf("The mem is :%d\n",finfo.smem_len);  
   	 printf("The line_length is :%d\n",finfo.line_length);  
   	 printf("The xres is :%d\n",var.xres);  
   	 printf("The yres is :%d\n",var.yres);  
   	 printf("bits_per_pixel is :%d\n",var.bits_per_pixel); 
	line_width  = var.xres * var.bits_per_pixel / 8;

	pixel_width = var.bits_per_pixel / 8;
  	  //计算显存大小
	screen_size = var.xres * var.yres * var.bits_per_pixel / 8;


  	  /*这就是把fp所指的文件中从开始到screensize大小的内容给映射出来，得到一个指向这块空间的指针*/
	fb_base = (unsigned char *)mmap(NULL , screen_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd_fb, 0);
	if (fb_base == (unsigned char *)-1)
	{
		printf("can't mmap\n");
		return -1;
	}

	/* 清屏: 全部设为白色 */
	memset(fb_base, 0xff, screen_size);


	
	for(i = 0 ; i < var.xres/2 ; i++)
		for(j = 0 ; j < var.yres/2 ; j++)
			lcd_put_pixel(i,j, 0xFF0000); //设为红色

	for(i = var.xres/2 ; i < var.xres ; i++)
		for(j = var.yres/2 ; j < var.yres ; j++)
			lcd_put_pixel(i,j, 0xFF0000); //设为红色


	munmap(fb_base , screen_size);/*解除映射*/
	close(fd_fb); /*关闭文件*/
	
	return 0;	
}

how0723 · 2021-12-12 22:00:37

哇酷小二说：

buildroot 勾选 fbv 看图，或者 fb-test 测试程序可以测试lcd framebuffer

用fb-test 应该是正常的，可以肯定之前是lvgl的分辨率设置有问题。
测试结果如下：

smiletiger · 2021-12-15 09:22:35

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楼主 # 2021-12-12 19:43:59 分享评论

千辛万苦调试，只剩最后一步LCD驱动不起来

#1 2021-12-12 21:16:20 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

楼主 #2 2021-12-12 21:29:11 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

#3 2021-12-12 21:31:50 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

楼主 #4 2021-12-12 21:41:44 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

楼主 #5 2021-12-12 21:42:17 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

#6 2021-12-12 21:43:22 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

楼主 #7 2021-12-12 21:44:49 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

#8 2021-12-12 21:55:27 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

楼主 #9 2021-12-12 22:00:37 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

#10 2021-12-15 09:22:35 分享评论

Re: 千辛万苦调试，只剩最后一步LCD驱动不起来

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