wdwalker

[mbed] Working path "/Users/wwalker/tmp" (directory)
[mbed] Importing program "BBB" from "git@github.com:wdwalker/BBB" at latest revision in the current branch
[mbed] Exec "git clone git@github.com:wdwalker/BBB /Users/wwalker/tmp/BBB -v" in /Users/wwalker/tmp
Cloning into '/Users/wwalker/tmp/BBB'...
remote: Counting objects: 136, done.
remote: Compressing objects: 100% (3/3), done.
remote: Total 136 (delta 0), reused 0 (delta 0), pack-reused 133
Receiving objects: 100% (136/136), 42.00 KiB | 0 bytes/s, done.
Resolving deltas: 100% (72/72), done.
[mbed] Query "git remote -v" in /Users/wwalker/tmp/BBB

wdwalker

/* Enable CLKOUT on pin 43 (P1.27) and have it show the CPU clock
 * divided by 16. (p68, p120).
 */
LPC_SC->CLKOUTCFG = 0x000001F0;
LPC_PINCON->PINSEL3 &= ~((1 << 23) | (1 << 22));
LPC_PINCON->PINSEL3 |= (1 << 22);

wdwalker

# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Link-Options.html
LDFLAGS = \
	-nodefaultlibs \
	-T "LPC1768.ld" \
	-Wl,--gc-sections \
	-Wl,-Map,"BBB.map" \
	-Wl,--start-group -lgcc -lc -lm $(RDIMONLIB) -Wl,--end-group

wdwalker

# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Diagnostic-Message-Formatting-Options.html
# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/C-Dialect-Options.html#C-Dialect-Options
# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Code-Gen-Options.html
ASFLAGS = \
	$(ARM_FLAGS) \
	$(WARNING_FLAGS) \
	-fmessage-length=0 \
	$(OPTIMIZE) \
	-ffunction-sections \
	-fdata-sections \

wdwalker

# Define DEBUG to anything if you want debug enabled.
#
# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Optimize-Options.html#Optimize-Options
# http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0205g/Bgbjjgij.html
# https://mcuoneclipse.com/2015/05/27/semihosting-for-kinetis-design-studio-v3-0-0-and-gnu-arm-embedded-launchpad/
DEBUG=
ifdef DEBUG
	OPTIMIZE=-Os -g -DDEBUG
	RDIMONSPECS = --specs=rdimon.specs
	RDIMONLIB = -lrdimon

wdwalker

# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Preprocessor-Options.html
CPPFLAGS = \
	-MMD \
	-MF"$(@:%.o=%.d)" \
	-MT"$(@)"

wdwalker

# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Warning-Options.html
WARNING_FLAGS = \
	-Wall \
	-Wextra \
	-pedantic \
	-Wbad-function-cast \
	-Wconversion \
	-Wfloat-equal \
	-Wlogical-op \
	-Wmissing-declarations \

wdwalker

# https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/ARM-Options.html
ARM_FLAGS = \
	-mthumb \
	-mcpu=cortex-m3

wdwalker

  /* Turn the LEDs on and off at roughly 1Hz.
   */
  while (1) {
    LPC_GPIO1->FIOSET |= ALL; /* p132 */
    delay_ms(500);
    LPC_GPIO1->FIOCLR |= ALL; /* p132 */
    delay_ms(500);
  }

wdwalker

#define P18 (1 << 18)
#define P20 (1 << 20)
#define P21 (1 << 21)
#define P23 (1 << 23)

#define ALL (P18 | P20 | P21 | P23)

...
  
  /* Set the direction as output by setting the associated bits