linux5.2内核，配置SPI屏幕（ili9341）步骤

无痕 · 2021-04-28 21:47:32

内核版本：linux5.2

参考文章：
https://whycan.com/t_576.html#p1579
https://blog.csdn.net/qulang000/article/details/114686525

我在配置此屏幕时遇到问题发的帖子
https://whycan.com/t_6393.html

感谢大佬们的热心指导！

-----------------------------------------------------------------------------------------------------------------------------
1、配置内核驱动
Device Drivers --->
[ * ] Staging drivers --->
<*> Support for small TFT LCD display modules --->
<*> FB driver for the ILI9341 LCD Controller
<*> Generic FB driver for TFT LCD displays

2、在sun8i-v3s-licheepi-zero.dts添加设备树节点。注意，reset、dc引脚可以自由选择，只要不跟其它驱动冲突即可。

&i2c0 {
112     status = "disable";
113 
114     ns2009: ns2009@48 {
115         compatible = "nsiway,ns2009";
116         reg = <0x48>;
117     };
118 };


183 &spi0 {
184     status = "okay";
185     spi_lcd@0 {
186         #address-cells = <1>;
187         #size-cells = <1>;
188         rotate = <90>;
189         fps = <30>;
190         buswidth = <8>;
191         bgr;
192         dc-gpios = <&pio 1 5 GPIO_ACTIVE_HIGH>;
193         reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>;
194         debug = <0x0>;
195         compatible = "ilitek,ili9341";
196         reg = <0>;
197         spi-max-frequency = <48000000>;
198     };
199 };

3、修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_one_gpio函数

注意需要在该文件上引入下面头文件，否则编译报错。
#include <linux/of_gpio.h>

      static int fbtft_request_one_gpio(struct fbtft_par *par,
  76                   const char *name, int index,
  77                   struct gpio_desc **gpiop)
  78 {
  79 /*
  80     struct device *dev = par->info->device;
  81     struct device_node *node = dev->of_node;
  82     int ret = 0;
  83 
  84     if (of_find_property(node, name, NULL)) {
  85         *gpiop = devm_gpiod_get_index(dev, dev->driver->name, index,
  86                           GPIOD_OUT_HIGH);
  87         if (IS_ERR(*gpiop)) {
  88             ret = PTR_ERR(*gpiop);
  89             dev_err(dev,
  90                 "Failed to request %s GPIO:%d\n", name, ret);
  91             return ret;
  92         }
  93         fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' GPIO\n",
  94                   __func__, name);
  95     }
  96 
  97     return ret;
  98 */
 100     struct device *dev = par->info->device;
 101     struct device_node *node = dev->of_node;
 102     int gpio, flags, ret = 0;
 103     enum of_gpio_flags of_flags;
 104     char gpio_names[32];
 105 
 106     //sprintf(gpio_names, "%s-gpios", name);
 107     sprintf(gpio_names, "%s", name);
 108     printk("@ gpio_names = %s\n", gpio_names);
 109     if (of_find_property(node, gpio_names, NULL)) {
 110         gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags);
 111         printk ("@ gpio = %d | ENOENT = %d | EPROBE_DEFER = %d  \n", gpio, ENOENT, EPROBE_DEFER);
 112         if (gpio == -ENOENT)
 113             return 0;
 114         if (gpio == -EPROBE_DEFER)
 115             return gpio;
 116         if (gpio < 0) {
 117             dev_err(dev,
 118                 "failed to get '%s' from DT\n", gpio_names);
 119             return gpio;
 120         }
 121 
 122          //active low translates to initially low 
 123         flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
 124                             GPIOF_OUT_INIT_HIGH;
 125         ret = devm_gpio_request_one(dev, gpio, flags,
 126                         dev->driver->name);
 127         if (ret) {
 128             dev_err(dev,
 129                 "gpio_request_one('%s'=%d) failed with %d\n",
 130                 gpio_names, gpio, ret);
 131             return ret;
 132         }
 133 
 134         *gpiop = gpio_to_desc(gpio);
 135         fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
 136                             __func__, gpio_names, gpio);
 137     }
 138     return ret;
 139 }

4、修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_reset函数

 278 static void fbtft_reset(struct fbtft_par *par)
 279 {
 280     /*
 281     if (!par->gpio.reset)
 282         return;
 283     fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
 284     gpiod_set_value_cansleep(par->gpio.reset, 0);
 285     usleep_range(20, 40);
 286     gpiod_set_value_cansleep(par->gpio.reset, 1);
 287     msleep(120);
 288     */
 289 
 290 
 291     if (!par->gpio.reset)
 292         return;
 293     fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
 294     gpiod_set_value_cansleep(par->gpio.reset, 1);
 295     usleep_range(20, 40);
 296     gpiod_set_value_cansleep(par->gpio.reset, 0);
 297     msleep(120);
 298     gpiod_set_value_cansleep(par->gpio.reset, 1);
 299     msleep(10);
 300 
 301 }

5、修改修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_gpios_dt函数里面，reset和dc引脚名称，从reset-gpios 和 dc-gpios 改为reset 和dc。

141 static int fbtft_request_gpios_dt(struct fbtft_par *par)
 142 {
 143     int i;
 144     int ret;
 145 
 146     if (!par->info->device->of_node)
 147         return -EINVAL;
 148 
 149 
 150     ret = fbtft_request_one_gpio(par, "reset", 0, &par->gpio.reset);
 151     if (ret)
 152         return ret;
 153 
 154     ret = fbtft_request_one_gpio(par, "dc", 0, &par->gpio.dc);
 155     if (ret)
 156         return ret;
 157 
 158     ret = fbtft_request_one_gpio(par, "rd-gpios", 0, &par->gpio.rd);
 159     if (ret)
 160         return ret;
 161     ret = fbtft_request_one_gpio(par, "wr-gpios", 0, &par->gpio.wr);
 162     if (ret)
 163         return ret;
 164     ret = fbtft_request_one_gpio(par, "cs-gpios", 0, &par->gpio.cs);
 165     if (ret)
 166         return ret;
 167     ret = fbtft_request_one_gpio(par, "latch-gpios", 0, &par->gpio.latch);
 168     if (ret)
 169         return ret;
 170     for (i = 0; i < 16; i++) {
 171         ret = fbtft_request_one_gpio(par, "db-gpios", i,
 172                          &par->gpio.db[i]);
 173         if (ret)
 174             return ret;
 175         ret = fbtft_request_one_gpio(par, "led-gpios", i,
 176                          &par->gpio.led[i]);
 177         if (ret)
 178             return ret;
 179         ret = fbtft_request_one_gpio(par, "aux-gpios", i,
 180                          &par->gpio.aux[i]);
 181         if (ret)
 182             return ret;
 183     }

6、修改drivers/staging/fbtft/fbtft-bus.c 中的fbtft_write_vmem16_bus8函数，直接替换

 
int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
{
	u16 *vmem16;
	__be16 *txbuf16 = par->txbuf.buf;
	size_t remain;
	size_t to_copy;
	size_t tx_array_size;
	int i;
	int ret = 0;
	size_t startbyte_size = 0;
 
	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
		      __func__, offset, len);
 
	remain = len / 2;
	vmem16 = (u16 *)(par->info->screen_buffer + offset);
 
	if (par->gpio.dc)
	{
		//printk("dc拉高！\n");
		gpiod_set_value(par->gpio.dc, 1);
	}
	/* non buffered write */
	if (!par->txbuf.buf)
		return par->fbtftops.write(par, vmem16, len);
 
	/* buffered write */
	tx_array_size = par->txbuf.len / 2;
 
	if (par->startbyte) {
		txbuf16 = par->txbuf.buf + 1;
		tx_array_size -= 2;
		*(u8 *)(par->txbuf.buf) = par->startbyte | 0x2;
		startbyte_size = 1;
	}
 
	while (remain) {
		to_copy = min(tx_array_size, remain);
		dev_dbg(par->info->device, "to_copy=%zu, remain=%zu\n",
			to_copy, remain - to_copy);
 
		for (i = 0; i < to_copy; i++)
			txbuf16[i] = cpu_to_be16(vmem16[i]);
 
		vmem16 = vmem16 + to_copy;
		ret = par->fbtftops.write(par, par->txbuf.buf,
						startbyte_size + to_copy * 2);
		if (ret < 0)
			return ret;
		remain -= to_copy;
	}
 
	return ret;
}

最后编译运行即可，启动log中会出现下面提示

[    1.165809] fbtft_of_value: buswidth = 8
[    1.169779] fbtft_of_value: debug = 0
[    1.173438] fbtft_of_value: rotate = 90
[    1.177267] fbtft_of_value: fps = 30
[    1.215817] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.225921] mmc0: new high speed SDHC card at address 1234
[    1.233279] mmcblk0: mmc0:1234 SA08G 7.21 GiB
[    1.239976]  mmcblk0: p1 p2
[    1.475892] random: fast init done
[    1.510864] Console: switching to colour frame buffer device 40x30
[    1.517762] graphics fb0: fb_ili9341 frame buffer, 320x240, 150 KiB video memory, 16 KiB buffer memory, fps=33, spi0.0 at 48 MHz

无痕 · 2021-04-28 21:49:14

接线

SPI屏 zero
3v3 3v3
GND GND
DC PWM1
RST 3v3
CS CS
CLK CLK
MISO MISO
MOSI MOSI
LED 3.3V

阿黄 · 2021-04-29 13:10:23

娃酷网就需要你这样的分享

zzm24 · 2021-04-29 16:16:38

记得spi FIFO只有64字节,楼主可以在刷屏时cat /proc/interrupts看看spi的中断次数不?
看看刷屏中断会不会太频繁了

无痕 · 2021-04-29 17:21:44

zzm24 说：

记得spi FIFO只有64字节,楼主可以在刷屏时cat /proc/interrupts看看spi的中断次数不?
看看刷屏中断会不会太频繁了

可以呀，但是我现在只是把屏幕配置好。我是打算把摄像头获取到的图像显示在屏幕上的，但是使用的时候遇到了问题。问题发在下面的帖子上。
https://whycan.com/t_3909.html

或者你告诉怎么刷屏

无痕 · 2021-04-30 07:29:36

zzm24 说：

记得spi FIFO只有64字节,楼主可以在刷屏时cat /proc/interrupts看看spi的中断次数不?
看看刷屏中断会不会太频繁了

你看下

# cat /proc/interrupts
           CPU0
 19:       7542     GIC-0  27 Level     arch_timer
 21:          0     GIC-0  50 Level     timer@1c20c00
 22:          0     GIC-0  82 Level     1c02000.dma-controller
 23:      27439     GIC-0  92 Level     sunxi-mmc
 24:          0     GIC-0 103 Level     musb-hdrc.1.auto
 25:          0     GIC-0 104 Level     ehci_hcd:usb1
 26:          2     GIC-0 105 Level     ohci_hcd:usb2
 27:          0     GIC-0  72 Level     1c20400.rtc
 29:       1021     GIC-0 116 Level     sun6i-csi
 34:        392     GIC-0  32 Level     ttyS0
 35:       1724     GIC-0  39 Level     mv64xxx_i2c
 36:    4082175     GIC-0  97 Level     sun6i-spi
IPI0:          0  CPU wakeup interrupts
IPI1:          0  Timer broadcast interrupts
IPI2:          0  Rescheduling interrupts
IPI3:          0  Function call interrupts
IPI4:          0  CPU stop interrupts
IPI5:          0  IRQ work interrupts
IPI6:          0  completion interrupts
Err:          0

zzm24 · 2021-04-30 10:04:54

FIFO 刷屏这个中断次数确实挺高的
36: 4082175 GIC-0 97 Level sun6i-spi

一帧320*240*2=153600字节
刷一帧153600/64=2400次
因为我现在F1C100S上在用DMA刷SPI TFT,但是感觉跟其他通道DMA有干扰,想看看主线的FIFO刷的效率

酷酷酷 · 2021-05-02 23:39:32

请问如果移植完是黑屏的怎么办 u-boot使用的默认的配置没有lcd的

无痕 · 2021-05-03 09:39:26

酷酷酷说：

请问如果移植完是黑屏的怎么办 u-boot使用的默认的配置没有lcd的

cat /dev/urandom > /dev/fb0
cat /dev/zero > /dev/fb0

使用第一条命令可以让屏幕出现雪花

使用第二条命令可以让屏幕变黑

说明屏幕移植成功

酷酷酷 · 2021-05-03 21:33:24

无痕说：

酷酷酷说：
请问如果移植完是黑屏的怎么办 u-boot使用的默认的配置没有lcd的
cat /dev/urandom > /dev/fb0
cat /dev/zero > /dev/fb0
使用第一条命令可以让屏幕出现雪花
使用第二条命令可以让屏幕变黑
说明屏幕移植成功

那有什么库可以显示图片的吗还有就是控制台的输出是怎么输出在屏幕上的呀
fbv太难移植了 fbset好像又用不了

最近编辑记录酷酷酷 (2021-05-03 21:34:41)

liefyuan · 2021-09-06 18:33:23

大佬，如果ili9341屏幕没有CS引脚该怎么办呢？

stutian · 2022-04-10 14:43:20

[ 0.860671] fbtft_of_value: buswidth = 8
[ 0.864653] fbtft_of_value: debug = 0
[ 0.868325] fbtft_of_value: rotate = 270
[ 0.872252] fbtft_of_value: fps = 10
[ 1.244063] graphics fb0: fb_ili9341 frame buffer, 320x240, 150 KiB video memory, 16 KiB DMA buffer memory, fps=10, spi32766.0 at 15 MHz

make menuconfig同样配置为什么启动时没有显示如上log信息?
在这之前还需要在meun里配置什么吗?

IF-YiFan · 2022-05-25 19:12:04

5、修改修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_gpios_dt函数里面，reset和dc引脚名称，从reset-gpios 和 dc-gpios 改为reset 和dc。
这一步为什么要改这个，改成reset后你设备树还是reset-gpios，怎么会注册成功？

tevada2010 · 2022-07-30 23:27:28

我已经完成了每一步为什么显示器不显示？

https://whycan.com/t_6413.html

U-Boot 2017.01-rc2-00073-gdd6e8740dc-dirty (Jul 31 2022 - 11:52:11 +0700) Allwinner Technology

CPU:   Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM:  64 MiB
MMC:   SUNXI SD/MMC: 0
SF: unrecognized JEDEC id bytes: 00, c2, 12
*** Warning - spi_flash_probe() failed, using default environment

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 
reading zImage
4196800 bytes read in 232 ms (17.3 MiB/s)
reading sun8i-v3s-licheepi-zero-dock.dtb
12397 bytes read in 30 ms (403.3 KiB/s)
## Flattened Device Tree blob at 41800000
   Booting using the fdt blob at 0x41800000
   Loading Device Tree to 42df9000, end 42dff06c ... OK

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.2.0-licheepi-zero (tevada@T420s) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05)) #6 SMP Sun Jul 31 21:06:16 +07 2022
[    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 s34508 r8192 d22836 u65536
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 16256
[    0.000000] Kernel command line: console=ttyS0,115200 panic=5 mtdparts=spi32766.0:1M(uboot),64k(dtb),4M(kernel),-(rootfs) rootwait root=/dev/mmcblk0p2 earlyprintk rw  vt.global_cursor_default=0
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 55044K/65536K available (6144K kernel code, 301K rwdata, 1684K rodata, 1024K init, 254K bss, 10492K reserved, 0K cma-reserved, 0K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu: 	RCU event tracing is enabled.
[    0.000000] rcu: 	RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    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] random: get_random_bytes called from start_kernel+0x300/0x48c with crng_init=0
[    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
[    0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000019] Switching to timer-based delay loop, resolution 41ns
[    0.000210] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000451] Console: colour dummy device 80x30
[    0.000507] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.000523] pid_max: default: 32768 minimum: 301
[    0.000686] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.000703] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.001507] CPU: Testing write buffer coherency: ok
[    0.002022] /cpus/cpu@0 missing clock-frequency property
[    0.002048] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.002815] Setting up static identity map for 0x40100000 - 0x40100060
[    0.003022] rcu: Hierarchical SRCU implementation.
[    0.003567] smp: Bringing up secondary CPUs ...
[    0.003586] smp: Brought up 1 node, 1 CPU
[    0.003597] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[    0.003604] CPU: All CPU(s) started in SVC mode.
[    0.004683] devtmpfs: initialized
[    0.008173] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.008494] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.008526] futex hash table entries: 256 (order: 2, 16384 bytes, linear)
[    0.008770] pinctrl core: initialized pinctrl subsystem
[    0.009804] NET: Registered protocol family 16
[    0.010423] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.011687] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.011706] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.035081] SCSI subsystem initialized
[    0.035244] usbcore: registered new interface driver usbfs
[    0.035298] usbcore: registered new interface driver hub
[    0.035418] usbcore: registered new device driver usb
[    0.035651] mc: Linux media interface: v0.10
[    0.035692] videodev: Linux video capture interface: v2.00
[    0.035881] Advanced Linux Sound Architecture Driver Initialized.
[    0.037188] clocksource: Switched to clocksource arch_sys_counter
[    0.049291] NET: Registered protocol family 2
[    0.050120] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    0.050160] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.050185] TCP bind hash table entries: 1024 (order: 1, 8192 bytes, linear)
[    0.050209] TCP: Hash tables configured (established 1024 bind 1024)
[    0.050354] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.050406] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[    0.050700] NET: Registered protocol family 1
[    0.052563] Initialise system trusted keyrings
[    0.052935] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.090419] Key type asymmetric registered
[    0.090441] Asymmetric key parser 'x509' registered
[    0.090541] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[    0.090553] io scheduler mq-deadline registered
[    0.090560] io scheduler kyber registered
[    0.091569] sun4i-usb-phy 1c19400.phy: Couldn't request ID GPIO
[    0.095297] sun8i-v3s-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.164058] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.166389] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pb not found, using dummy regulator
[    0.167563] printk: console [ttyS0] disabled
[    0.187847] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 36, base_baud = 1500000) is a U6_16550A
[    0.702720] printk: console [ttyS0] enabled
[    0.731672] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pc not found, using dummy regulator
[    0.742960] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.749580] ehci-platform: EHCI generic platform driver
[    0.755100] ehci-platform 1c1a000.usb: EHCI Host Controller
[    0.760774] ehci-platform 1c1a000.usb: new USB bus registered, assigned bus number 1
[    0.768731] ehci-platform 1c1a000.usb: irq 26, io mem 0x01c1a000
[    0.797213] ehci-platform 1c1a000.usb: USB 2.0 started, EHCI 1.00
[    0.804423] hub 1-0:1.0: USB hub found
[    0.808377] hub 1-0:1.0: 1 port detected
[    0.812959] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.819279] ohci-platform: OHCI generic platform driver
[    0.824817] ohci-platform 1c1a400.usb: Generic Platform OHCI controller
[    0.831558] ohci-platform 1c1a400.usb: new USB bus registered, assigned bus number 2
[    0.839555] ohci-platform 1c1a400.usb: irq 27, io mem 0x01c1a400
[    0.912278] hub 2-0:1.0: USB hub found
[    0.916125] hub 2-0:1.0: 1 port detected
[    0.923471] usbcore: registered new interface driver usb-storage
[    0.930748] input: 1c22800.lradc as /devices/platform/soc/1c22800.lradc/input/input0
[    0.940032] sun6i-rtc 1c20400.rtc: registered as rtc0
[    0.945094] sun6i-rtc 1c20400.rtc: RTC enabled
[    0.949816] i2c /dev entries driver
[    0.954200] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[    0.962886] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pf not found, using dummy regulator
[    0.999313] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB
[    1.006575] sun8i-v3s-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pg not found, using dummy regulator
[    1.041672] sunxi-mmc 1c10000.mmc: initialized, max. request size: 16384 KB
[    1.049759] usbcore: registered new interface driver usbhid
[    1.055335] usbhid: USB HID core driver
[    1.059383] fbtft_of_value: buswidth = 8
[    1.063311] fbtft_of_value: debug = 0
[    1.066969] fbtft_of_value: rotate = 90
[    1.070841] fbtft_of_value: fps = 30
[    1.084058] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.095947] mmc0: new high speed SD card at address e624
[    1.103110] mmcblk0: mmc0:e624 SU02G 1.84 GiB 
[    1.108669] mmc1: queuing unknown CIS tuple 0x01 (3 bytes)
[    1.119178]  mmcblk0: p1 p2
[    1.125484] mmc1: queuing unknown CIS tuple 0x1a (5 bytes)
[    1.134200] mmc1: queuing unknown CIS tuple 0x1b (8 bytes)
[    1.141570] mmc1: queuing unknown CIS tuple 0x80 (1 bytes)
[    1.147100] mmc1: queuing unknown CIS tuple 0x81 (1 bytes)
[    1.152699] mmc1: queuing unknown CIS tuple 0x82 (1 bytes)
[    1.158256] mmc1: new high speed SDIO card at address 0001
[    1.364748] random: fast init done
[    1.400120] Console: switching to colour frame buffer device 40x30
[    1.407009] graphics fb0: fb_ili9341 frame buffer, 320x240, 150 KiB video memory, 16 KiB buffer memory, fps=33, spi0.0 at 48 MHz
[    1.420661] sun4i-codec 1c22c00.codec: ASoC: codec-analog@01c23000 not registered
[    1.428304] sun4i-codec 1c22c00.codec: Failed to register our card
[    1.435554] Initializing XFRM netlink socket
[    1.439995] NET: Registered protocol family 17
[    1.448384] Registering SWP/SWPB emulation handler
[    1.464852] Loading compiled-in X.509 certificates
[    1.480779] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[    1.492236] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[    1.498078] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 3
[    1.512457] random: crng init done
[    1.519802] hub 3-0:1.0: USB hub found
[    1.524108] hub 3-0:1.0: 1 port detected
[    1.530974] debugfs: Directory '1c22c00.codec' with parent 'V3s Audio Codec' already present!
[    1.539665] sun4i-codec 1c22c00.codec: ASoC: Failed to create component debugfs directory: -17
[    1.549756] sun4i-codec 1c22c00.codec: Codec <-> 1c22c00.codec mapping ok
[    1.558304] sun6i-rtc 1c20400.rtc: setting system clock to 1970-01-01T00:05:48 UTC (348)
[    1.566671] vcc5v0: disabling
[    1.569728] ALSA device list:
[    1.572699]   #0: V3s Audio Codec
[    1.615172] EXT4-fs (mmcblk0p2): recovery complete
[    1.622057] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    1.630315] VFS: Mounted root (ext4 filesystem) on device 179:2.
[    1.638526] devtmpfs: mounted
[    1.642696] Freeing unused kernel memory: 1024K
[    1.647461] Run /sbin/init as init process
[    1.745748] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Initializing random number generator: OK
Saving random seed: OK
Starting network: OK

Welcome to Buildroot for the LicheePi Zero
licheepi-zero login:

最近编辑记录 tevada2010 (2022-07-31 22:23:24)

liutian · 2022-09-16 10:55:39

@酷酷酷

那有什么库可以显示图片的吗还有就是控制台的输出是怎么输出在屏幕上的呀
fbv太难移植了 fbset好像又用不了

解决了吗？我也想问配置好驱动系统就能输出显示到屏上了吗？

hj0787 · 2022-12-29 16:46:54

楼主有没有遇到过一会就死机了
[ 76.400003] Unable to handle kernel paging request at virtual address c4000000
[ 76.410644] pgd = b12b71ea
[ 76.414521] [c4000000] *pgd=00000000
[ 76.419283] Internal error: Oops: 5 [#1] ARM
[ 76.425835] Modules linked in:
[ 76.430065] CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.1 #12
[ 76.438074] Hardware name: Allwinner suniv Family
[ 76.445061] PC is at sun6i_spi_handler+0x110/0x150
[ 76.452141] LR is at 0xc4000001

AB · 2023-04-07 09:19:26

遇到驱动问题，真的很搞死人。。。。

WhyCan Forum(哇酷开发者社区)

楼主 #1 2021-04-28 21:47:32 分享评论

linux5.2内核，配置SPI屏幕（ili9341）步骤

楼主 #2 2021-04-28 21:49:14 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#3 2021-04-29 13:10:23 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#4 2021-04-29 16:16:38 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

楼主 #5 2021-04-29 17:21:44 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

楼主 #6 2021-04-30 07:29:36 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#7 2021-04-30 10:04:54 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#8 2021-05-02 23:39:32 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

楼主 #9 2021-05-03 09:39:26 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#10 2021-05-03 21:33:24 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#11 2021-09-06 18:33:23 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#12 2022-04-10 14:43:20 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#13 2022-05-25 19:12:04 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#14 2022-07-30 23:27:28 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#17 2022-09-16 10:55:39 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#18 2022-12-29 16:46:54 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

#19 2023-04-07 09:19:26 分享评论

Re: linux5.2内核，配置SPI屏幕（ili9341）步骤

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