January 2019
Intermediate to advanced
458 pages
10h 35m
English
Content preview from Hands-On Embedded Programming with C++17
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Makefile-user.mk
In the root of the project folder, we find this Makefile. It contains a number of settings that we may want to set to suit our purposes:
|
Name |
Description |
|
COM_PORT |
If we always connect the board to the same serial port, we can hardcode it here to save ourselves some typing. |
|
SPI_MODE |
This sets the SPI mode used while flashing the firmware images to the SPI ROM. With dio only two data lines (SD_D0, D1) or four (SD_D0-3). Not all SPI ROMs have all four data lines connected. The qio mode is faster, but dio should always work. |
|
RBOOT_ENABLED |
When set to 1, this enables rBoot bootloader support. We want this enabled. |
|
RBOOT_BIG_FLASH |
With 4 MB of ROM available, we wish to use all of this. Enable this ... |
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