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faq, issue #390

This commit is contained in:
kraus 2018-04-07 07:19:49 +02:00
parent c44d16b1e8
commit e843c6420c
2 changed files with 11 additions and 5 deletions
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14
doc/faq.txt
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@ -194,11 +194,17 @@ https://github.com/olikraus/u8g2/tree/master/tools/font/bdfconv
Use the Makefile in this directory to create a Linux binary.
Q: How can I use multiple SPI Displays?
A: For each additional display, separate CS (Chip select) and RST (Reset) lines are required.
A: For each additional display, separate CS (Chip select) is required.
There are two options for the RST (Reset) line:
Also use separate lines or use the same GPIO pin.
// Setup display1 and display2
U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI display1(U8G2_R0, /*CLK*/ 18, /*MOSI*/ 23, /*CS*/ 16,/*DC*/ 17, /*RS*/ 4);
U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI display2(U8G2_R0, /*CLK*/ 18, /*MOSI*/ 23, /*CS*/ 15,/*DC*/ 17, /*RS*/ 4);
// Setup display1 and display2, both reset lines are connected to 4, execute display1.begin() first.
U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI display1(U8G2_R0, /*CLK*/ 18, /*MOSI*/ 23, /*CS*/ 16,/*DC*/ 17, /*RST*/ 4);
U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI display2(U8G2_R0, /*CLK*/ 18, /*MOSI*/ 23, /*CS*/ 15,/*DC*/ 17, /*RST*/ U8X8_PIN_NONE);
// Setup display1 and display2, separate reset lines
U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI display1(U8G2_R0, /*CLK*/ 18, /*MOSI*/ 23, /*CS*/ 16,/*DC*/ 17, /*RST*/ 4);
U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI display2(U8G2_R0, /*CLK*/ 18, /*MOSI*/ 23, /*CS*/ 15,/*DC*/ 17, /*RST*/ 5);
Ensure that the buffer is sent after printing with each display as follows.

2
tools/release/print_release.sh
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@ -1,2 +1,2 @@
# without 'v' prefix
echo -n "2.22.9"
echo -n "2.22.10"