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make variables local to save heap

This commit is contained in:
devsaurus 2015-04-21 21:48:12 +02:00
parent ef7ed47ac3
commit fc19725fef
3 changed files with 18 additions and 18 deletions
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12
lua_examples/u8glib/u8g_bitmaps.lua
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@ -2,9 +2,9 @@
-- setup I2c and connect display -- setup I2c and connect display
function init_i2c_display() function init_i2c_display()
-- SDA and SCL can be assigned freely to available GPIOs -- SDA and SCL can be assigned freely to available GPIOs
sda = 5 -- GPIO14 local sda = 5 -- GPIO14
scl = 6 -- GPIO12 local scl = 6 -- GPIO12
sla = 0x3c local sla = 0x3c
i2c.setup(0, sda, scl, i2c.SLOW) i2c.setup(0, sda, scl, i2c.SLOW)
disp = u8g.ssd1306_128x64_i2c(sla) disp = u8g.ssd1306_128x64_i2c(sla)
end end
@ -15,9 +15,9 @@ function init_spi_display()
-- Hardware SPI MOSI = GPIO13 -- Hardware SPI MOSI = GPIO13
-- Hardware SPI MISO = GPIO12 (not used) -- Hardware SPI MISO = GPIO12 (not used)
-- CS, D/C, and RES can be assigned freely to available GPIOs -- CS, D/C, and RES can be assigned freely to available GPIOs
cs = 8 -- GPIO15, pull-down 10k to GND local cs = 8 -- GPIO15, pull-down 10k to GND
dc = 4 -- GPIO2 local dc = 4 -- GPIO2
res = 0 -- GPIO16 local res = 0 -- GPIO16
spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, spi.DATABITS_8, 0) spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, spi.DATABITS_8, 0)
disp = u8g.ssd1306_128x64_spi(cs, dc, res) disp = u8g.ssd1306_128x64_spi(cs, dc, res)

12
lua_examples/u8glib/u8g_graphics_test.lua
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@ -2,9 +2,9 @@
-- setup I2c and connect display -- setup I2c and connect display
function init_i2c_display() function init_i2c_display()
-- SDA and SCL can be assigned freely to available GPIOs -- SDA and SCL can be assigned freely to available GPIOs
sda = 5 -- GPIO14 local sda = 5 -- GPIO14
scl = 6 -- GPIO12 local scl = 6 -- GPIO12
sla = 0x3c local sla = 0x3c
i2c.setup(0, sda, scl, i2c.SLOW) i2c.setup(0, sda, scl, i2c.SLOW)
disp = u8g.ssd1306_128x64_i2c(sla) disp = u8g.ssd1306_128x64_i2c(sla)
end end
@ -15,9 +15,9 @@ function init_spi_display()
-- Hardware SPI MOSI = GPIO13 -- Hardware SPI MOSI = GPIO13
-- Hardware SPI MISO = GPIO12 (not used) -- Hardware SPI MISO = GPIO12 (not used)
-- CS, D/C, and RES can be assigned freely to available GPIOs -- CS, D/C, and RES can be assigned freely to available GPIOs
cs = 8 -- GPIO15, pull-down 10k to GND local cs = 8 -- GPIO15, pull-down 10k to GND
dc = 4 -- GPIO2 local dc = 4 -- GPIO2
res = 0 -- GPIO16 local res = 0 -- GPIO16
spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, spi.DATABITS_8, 0) spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, spi.DATABITS_8, 0)
disp = u8g.ssd1306_128x64_spi(cs, dc, res) disp = u8g.ssd1306_128x64_spi(cs, dc, res)

12
lua_examples/u8glib/u8g_rotation.lua
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@ -2,9 +2,9 @@
-- setup I2c and connect display -- setup I2c and connect display
function init_i2c_display() function init_i2c_display()
-- SDA and SCL can be assigned freely to available GPIOs -- SDA and SCL can be assigned freely to available GPIOs
sda = 5 -- GPIO14 local sda = 5 -- GPIO14
scl = 6 -- GPIO12 local scl = 6 -- GPIO12
sla = 0x3c local sla = 0x3c
i2c.setup(0, sda, scl, i2c.SLOW) i2c.setup(0, sda, scl, i2c.SLOW)
disp = u8g.ssd1306_128x64_i2c(sla) disp = u8g.ssd1306_128x64_i2c(sla)
end end
@ -15,9 +15,9 @@ function init_spi_display()
-- Hardware SPI MOSI = GPIO13 -- Hardware SPI MOSI = GPIO13
-- Hardware SPI MISO = GPIO12 (not used) -- Hardware SPI MISO = GPIO12 (not used)
-- CS, D/C, and RES can be assigned freely to available GPIOs -- CS, D/C, and RES can be assigned freely to available GPIOs
cs = 8 -- GPIO15, pull-down 10k to GND local cs = 8 -- GPIO15, pull-down 10k to GND
dc = 4 -- GPIO2 local dc = 4 -- GPIO2
res = 0 -- GPIO16 local res = 0 -- GPIO16
spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, spi.DATABITS_8, 0) spi.setup(1, spi.MASTER, spi.CPOL_LOW, spi.CPHA_LOW, spi.DATABITS_8, 0)
disp = u8g.ssd1306_128x64_spi(cs, dc, res) disp = u8g.ssd1306_128x64_spi(cs, dc, res)