为什么espidf的spi就是很慢
This commit is contained in:
+37
-15
@@ -49,7 +49,8 @@ void spi_init()
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.quadwp_io_num = -1, // 不使用 QWP
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.quadhd_io_num = -1, // 不使用 QHD
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.max_transfer_sz = 4096, // 最大传输大小
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.flags = SPICOMMON_BUSFLAG_MASTER,
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.flags = 0,
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.intr_flags = 0,
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};
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// 2. 初始化 SPI 总线
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@@ -69,6 +70,9 @@ void spi_init()
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.spics_io_num = LCD_CS,
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.queue_size = 7, // 队列深度
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.flags = SPI_DEVICE_NO_DUMMY, // 禁用 dummy 周期
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.input_delay_ns = 0,
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.pre_cb = NULL,
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.post_cb = NULL,
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};
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@@ -82,15 +86,33 @@ void spi_init()
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}
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// SPI 写数据
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esp_err_t lcd_spi_write8(uint8_t data) {
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spi_transaction_t trans = {
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.length = 8, // 数据位数
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.tx_buffer = &data, // 发送缓冲区
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.rx_buffer = NULL, // 不接收
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// 高速数据传输函数
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esp_err_t spi_transfer_fast(spi_device_handle_t spi, uint8_t *tx_data, uint8_t *rx_data, size_t len)
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{
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spi_transaction_t t = {
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.flags = 0,
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.cmd = 0,
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.addr = 0,
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.length = 8 * len,
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.tx_buffer = tx_data,
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.rx_buffer = rx_data,
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};
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return spi_device_transmit(lcd_spi, &trans);
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// 使用轮询传输（小数据量更快）
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return spi_device_polling_transmit(spi, &t);
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}
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// SPI 写数据
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esp_err_t lcd_spi_write8(uint8_t data) {
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// spi_transaction_t trans = {
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// .length = 8, // 数据位数
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// .tx_buffer = &data, // 发送缓冲区
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// .rx_buffer = NULL, // 不接收
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// };
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// return spi_device_transmit(lcd_spi, &trans);
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return spi_transfer_fast(lcd_spi,&data,NULL,1);
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}
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// SPI 写数据
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@@ -100,15 +122,15 @@ esp_err_t lcd_spi_write16(uint16_t data) {
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tx_buf[1] = data & 0xFF;
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tx_buf[0] = (data >> 8) & 0xFF;
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spi_transaction_t trans = {
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.length = 16, // 数据位数
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.tx_buffer = tx_buf, // 发送缓冲区
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.rx_buffer = NULL, // 不接收
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};
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// spi_transaction_t trans = {
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// .length = 16, // 数据位数
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// .tx_buffer = tx_buf, // 发送缓冲区
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// .rx_buffer = NULL, // 不接收
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// };
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// return spi_device_transmit(lcd_spi, &trans);
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return spi_device_transmit(lcd_spi, &trans);
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return spi_transfer_fast(lcd_spi,tx_buf,NULL,2);
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}
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// SPI 写命令
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@@ -0,0 +1,5 @@
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.pio
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.vscode/.browse.c_cpp.db*
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.vscode/c_cpp_properties.json
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.vscode/launch.json
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.vscode/ipch
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Vendored
+10
@@ -0,0 +1,10 @@
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||||
{
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||||
// See http://go.microsoft.com/fwlink/?LinkId=827846
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// for the documentation about the extensions.json format
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||||
"recommendations": [
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||||
"platformio.platformio-ide"
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||||
],
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||||
"unwantedRecommendations": [
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"ms-vscode.cpptools-extension-pack"
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||||
]
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}
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@@ -0,0 +1,37 @@
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||||
|
||||
This directory is intended for project header files.
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||||
|
||||
A header file is a file containing C declarations and macro definitions
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||||
to be shared between several project source files. You request the use of a
|
||||
header file in your project source file (C, C++, etc) located in `src` folder
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||||
by including it, with the C preprocessing directive `#include'.
|
||||
|
||||
```src/main.c
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||||
|
||||
#include "header.h"
|
||||
|
||||
int main (void)
|
||||
{
|
||||
...
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||||
}
|
||||
```
|
||||
|
||||
Including a header file produces the same results as copying the header file
|
||||
into each source file that needs it. Such copying would be time-consuming
|
||||
and error-prone. With a header file, the related declarations appear
|
||||
in only one place. If they need to be changed, they can be changed in one
|
||||
place, and programs that include the header file will automatically use the
|
||||
new version when next recompiled. The header file eliminates the labor of
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||||
finding and changing all the copies as well as the risk that a failure to
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||||
find one copy will result in inconsistencies within a program.
|
||||
|
||||
In C, the convention is to give header files names that end with `.h'.
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||||
|
||||
Read more about using header files in official GCC documentation:
|
||||
|
||||
* Include Syntax
|
||||
* Include Operation
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||||
* Once-Only Headers
|
||||
* Computed Includes
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||||
|
||||
https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html
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||||
@@ -0,0 +1,46 @@
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||||
|
||||
This directory is intended for project specific (private) libraries.
|
||||
PlatformIO will compile them to static libraries and link into the executable file.
|
||||
|
||||
The source code of each library should be placed in a separate directory
|
||||
("lib/your_library_name/[Code]").
|
||||
|
||||
For example, see the structure of the following example libraries `Foo` and `Bar`:
|
||||
|
||||
|--lib
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||||
| |
|
||||
| |--Bar
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||||
| | |--docs
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||||
| | |--examples
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||||
| | |--src
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||||
| | |- Bar.c
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||||
| | |- Bar.h
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||||
| | |- library.json (optional. for custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
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| |
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||||
| |--Foo
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| | |- Foo.c
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| | |- Foo.h
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| |
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| |- README --> THIS FILE
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|
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|- platformio.ini
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||||
|--src
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|- main.c
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||||
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||||
Example contents of `src/main.c` using Foo and Bar:
|
||||
```
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||||
#include <Foo.h>
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||||
#include <Bar.h>
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||||
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||||
int main (void)
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||||
{
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||||
...
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||||
}
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||||
|
||||
```
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||||
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||||
The PlatformIO Library Dependency Finder will find automatically dependent
|
||||
libraries by scanning project source files.
|
||||
|
||||
More information about PlatformIO Library Dependency Finder
|
||||
- https://docs.platformio.org/page/librarymanager/ldf.html
|
||||
@@ -0,0 +1,14 @@
|
||||
; PlatformIO Project Configuration File
|
||||
;
|
||||
; Build options: build flags, source filter
|
||||
; Upload options: custom upload port, speed and extra flags
|
||||
; Library options: dependencies, extra library storages
|
||||
; Advanced options: extra scripting
|
||||
;
|
||||
; Please visit documentation for the other options and examples
|
||||
; https://docs.platformio.org/page/projectconf.html
|
||||
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[env:seeed_xiao_esp32c3]
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platform = espressif32
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board = seeed_xiao_esp32c3
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framework = arduino
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@@ -0,0 +1,241 @@
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#include "lcd.h"
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#include <SPI.h>
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SPIClass * vspi = NULL;
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/******************************************************************************
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函数说明：LCD写入命令
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入口数据：dat 写入的命令
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返回值： 无
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******************************************************************************/
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void LCD_WR_REG(uint8_t dat)
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{
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digitalWrite(LCD_DS,0);//写命令
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vspi->transfer(dat);
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digitalWrite(LCD_DS,1);//写数据
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}
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/******************************************************************************
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函数说明：设置起始和结束地址
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入口数据：x1,x2 设置列的起始和结束地址
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y1,y2 设置行的起始和结束地址
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返回值： 无
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******************************************************************************/
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void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2)
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{
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#if USE_HORIZONTAL==0
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LCD_WR_REG(0x2a);//列地址设置
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vspi->transfer16(x1);
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vspi->transfer16(x2);
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LCD_WR_REG(0x2b);//行地址设置
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vspi->transfer16(y1);
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vspi->transfer16(y2);
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LCD_WR_REG(0x2c);//储存器写
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#elif USE_HORIZONTAL==1
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LCD_WR_REG(0x2a);//列地址设置
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vspi->transfer16(x1);
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vspi->transfer16(x2);
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LCD_WR_REG(0x2b);//行地址设置
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vspi->transfer16(y1+80);
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vspi->transfer16(y2+80);
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LCD_WR_REG(0x2c);//储存器写
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#elif USE_HORIZONTAL==2
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LCD_WR_REG(0x2a);//列地址设置
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vspi->transfer16(x1);
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vspi->transfer16(x2);
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LCD_WR_REG(0x2b);//行地址设置
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vspi->transfer16(y1);
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vspi->transfer16(y2);
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LCD_WR_REG(0x2c);//储存器写
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#elif USE_HORIZONTAL==3
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LCD_WR_REG(0x2a);//列地址设置
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vspi->transfer16(x1+80);
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vspi->transfer16(x2+80);
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LCD_WR_REG(0x2b);//行地址设置
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vspi->transfer16(y1);
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vspi->transfer16(y2);
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LCD_WR_REG(0x2c);//储存器写
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#endif
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}
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void LCD_fillRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color)
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{
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LCD_Address_Set(x,y,width+x-1,height+y-1);
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for(uint16_t i=0;i<height;i++)
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{
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for (uint16_t j=0;j<width;j++)
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{
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vspi->transfer16(color);
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//delay(100);
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}
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}
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}
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/******************************************************************************
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函数说明：LCD清屏函数
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入口数据：无
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返回值： 无
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******************************************************************************/
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void LCD_Clear(uint16_t Color)
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{
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uint16_t i,j;
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LCD_Address_Set(0,0,LCD_W-1,LCD_H-1);
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for(i=0;i<LCD_W;i++)
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{
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for (j=0;j<LCD_H;j++)
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{
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vspi->transfer16(Color);
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}
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}
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}
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void LCD_Clear_Rand()
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{
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uint16_t i,j;
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LCD_Address_Set(0,0,LCD_W-1,LCD_H-1);
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for(i=0;i<LCD_W;i++)
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{
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for (j=0;j<LCD_H;j++)
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{
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vspi->transfer16(rand());
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}
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}
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}
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unsigned int rgb555torgb565(unsigned int c)
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{
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c=c&0x7fff;
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unsigned int r=c>>10;
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c=c&0x03ff;
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unsigned int g=c>>5;
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c=c&0x001f;
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unsigned int b=c;
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unsigned int output=0;
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g=g*2;
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output= (r<<11)|(g<<5)|(b);
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return output;
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}
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void lcd_init()
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{
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pinMode(LCD_SDA, OUTPUT);
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pinMode(LCD_SCL, OUTPUT);
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pinMode(LCD_CS, OUTPUT);
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pinMode(LCD_DS, OUTPUT);
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digitalWrite(LCD_SDA,0);
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digitalWrite(LCD_SCL,0);
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digitalWrite(LCD_CS,0);
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digitalWrite(LCD_DS,0);
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vspi = new SPIClass(VSPI);
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vspi->begin(LCD_SCL, 0, LCD_SDA, LCD_CS);
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vspi->beginTransaction(SPISettings(spiClk, MSBFIRST, SPI_MODE0));
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pinMode(vspi->pinSS(), OUTPUT); //HSPI SS
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digitalWrite(vspi->pinSS(), LOW); //pull SS slow to prep other end for transfer
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//************* Start Initial Sequence **********//
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//delay(120);
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//LCD_WR_REG(0x01);
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//上电后硬件会自己复位
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delay(220);
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LCD_WR_REG(0x36);
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if(USE_HORIZONTAL==0)vspi->transfer(0x00);
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else if(USE_HORIZONTAL==1)vspi->transfer(0xC0);
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else if(USE_HORIZONTAL==2)vspi->transfer(0x70);
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else vspi->transfer(0xA0);
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LCD_WR_REG(0x3A);
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vspi->transfer(0x05);
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LCD_WR_REG(0xB2);
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vspi->transfer(0x0C);
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vspi->transfer(0x0C);
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vspi->transfer(0x00);
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vspi->transfer(0x33);
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vspi->transfer(0x33);
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LCD_WR_REG(0xB7);
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vspi->transfer(0x35);
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LCD_WR_REG(0xBB);
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vspi->transfer(0x19);
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LCD_WR_REG(0xC0);
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vspi->transfer(0x2C);
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LCD_WR_REG(0xC2);
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vspi->transfer(0x01);
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LCD_WR_REG(0xC3);
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vspi->transfer(0x12);
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LCD_WR_REG(0xC4);
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vspi->transfer(0x20);
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LCD_WR_REG(0xC6);
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vspi->transfer(0x0F);
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LCD_WR_REG(0xD0);
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vspi->transfer(0xA4);
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vspi->transfer(0xA1);
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LCD_WR_REG(0xE0);
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vspi->transfer(0xD0);
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vspi->transfer(0x04);
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vspi->transfer(0x0D);
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vspi->transfer(0x11);
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vspi->transfer(0x13);
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vspi->transfer(0x2B);
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vspi->transfer(0x3F);
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vspi->transfer(0x54);
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vspi->transfer(0x4C);
|
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vspi->transfer(0x18);
|
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vspi->transfer(0x0D);
|
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vspi->transfer(0x0B);
|
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vspi->transfer(0x1F);
|
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vspi->transfer(0x23);
|
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|
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LCD_WR_REG(0xE1);
|
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vspi->transfer(0xD0);
|
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vspi->transfer(0x04);
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vspi->transfer(0x0C);
|
||||
vspi->transfer(0x11);
|
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vspi->transfer(0x13);
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vspi->transfer(0x2C);
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vspi->transfer(0x3F);
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vspi->transfer(0x44);
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vspi->transfer(0x51);
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vspi->transfer(0x2F);
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vspi->transfer(0x1F);
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vspi->transfer(0x1F);
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vspi->transfer(0x20);
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vspi->transfer(0x23);
|
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LCD_WR_REG(0x21);
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LCD_WR_REG(0x11);
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delay(120);
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LCD_WR_REG(0x29);
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}
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@@ -0,0 +1,33 @@
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#ifndef LCD_H
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#define LCD_H
|
||||
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#include <arduino.h>
|
||||
|
||||
//硬件spi貌似接错线了
|
||||
|
||||
#define LCD_SDA 3
|
||||
#define LCD_SCL 2
|
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#define LCD_CS 7
|
||||
#define LCD_DS 6
|
||||
|
||||
|
||||
#define USE_HORIZONTAL 2 //设置横屏或者竖屏显示 0或1为竖屏 2或3为横屏
|
||||
#define LCD_W 320
|
||||
#define LCD_H 240
|
||||
#define OLED_CMD 0 //写命令
|
||||
#define OLED_DATA 1 //写数据
|
||||
|
||||
#define VSPI FSPI
|
||||
|
||||
|
||||
static const long spiClk = 80000000; // 80 MHz
|
||||
|
||||
|
||||
void lcd_init();
|
||||
|
||||
void LCD_Clear(uint16_t Color);
|
||||
|
||||
void LCD_fillRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color);
|
||||
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,18 @@
|
||||
#include <Arduino.h>
|
||||
#include "lcd.h"
|
||||
// put function declarations here:
|
||||
int myFunction(int, int);
|
||||
|
||||
void setup()
|
||||
{
|
||||
// put your setup code here, to run once:
|
||||
lcd_init();
|
||||
|
||||
LCD_Clear(rand());
|
||||
}
|
||||
|
||||
void loop()
|
||||
{
|
||||
// put your main code here, to run repeatedly:
|
||||
LCD_Clear(rand());
|
||||
}
|
||||
@@ -0,0 +1,11 @@
|
||||
|
||||
This directory is intended for PlatformIO Test Runner and project tests.
|
||||
|
||||
Unit Testing is a software testing method by which individual units of
|
||||
source code, sets of one or more MCU program modules together with associated
|
||||
control data, usage procedures, and operating procedures, are tested to
|
||||
determine whether they are fit for use. Unit testing finds problems early
|
||||
in the development cycle.
|
||||
|
||||
More information about PlatformIO Unit Testing:
|
||||
- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html
|
||||
Reference in New Issue
Block a user