ESP8266 Community Forum

- Wed Jan 07, 2015 9:11 am #6546

Note: The request is still open, if anyone who has can compile successfully, to report on what memory saving can be made by deselecting modules from compilation

I quickly set up a build environment on Windows. When building unmodified NodeMcu I get

Code: Select all> = node.heap()
20736

With

Code: Select all#define LUA_USE_MODULES_NODE
#define LUA_USE_MODULES_FILE
#define LUA_USE_MODULES_GPIO
#define LUA_USE_MODULES_WIFI
#define LUA_USE_MODULES_NET
// #define LUA_USE_MODULES_PWM
// #define LUA_USE_MODULES_I2C
// #define LUA_USE_MODULES_TMR
// #define LUA_USE_MODULES_ADC
#define LUA_USE_MODULES_UART
// #define LUA_USE_MODULES_OW
// #define LUA_USE_MODULES_BIT


I get

Code: Select all> = node.heap()
21688

So about 1k is gained.

- Wed Jan 07, 2015 9:25 am #6551

Note: The request is still open, if anyone who has can compile successfully, to report on what memory saving can be made by deselecting modules from compilation

I quickly set up a build environment on Windows. When building unmodified NodeMcu I get

Code: Select all> = node.heap()
20736

With

Code: Select all#define LUA_USE_MODULES_NODE
#define LUA_USE_MODULES_FILE
#define LUA_USE_MODULES_GPIO
#define LUA_USE_MODULES_WIFI
#define LUA_USE_MODULES_NET
// #define LUA_USE_MODULES_PWM
// #define LUA_USE_MODULES_I2C
// #define LUA_USE_MODULES_TMR
// #define LUA_USE_MODULES_ADC
#define LUA_USE_MODULES_UART
// #define LUA_USE_MODULES_OW
// #define LUA_USE_MODULES_BIT


I get

Code: Select all> = node.heap()
21688

So about 1k is gained.

Is that all Damn... I was hoping would be closer to 5k. Many thanks for doing this. I hope it helps others too.

Note: Was this with latest 0.9.5 firmware?
I think nodemcu team have migrated to lubuntu vm now. I also believe some of the current memory gains are due to compiler change...

- Wed Jan 07, 2015 9:31 am #6555

Note: Was this with latest 0.9.5 firmware?
I think nodemcu team have migrated to lubuntu vm now. I also believe some of the current memory gains are due to compiler change...

Yes, latest firmware. Latest pre-build version is compiled with gnu toolchain. Current memory gains are due to code optimizations.