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nullpointer check added

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This commit is contained in:
Tristan Krause 2019-05-16 11:03:49 +02:00
parent 8547dbb1bd
commit faefaed63c
3 changed files with 35 additions and 16 deletions
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2
control/examples/pegel/Makefile
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@ -24,7 +24,7 @@ help:
clean:
@echo "Cleaning..."
rm -f $(OBJECTS) $(OUT)
rm -f $(OBJECTS) $(OUT) *.bin gnuplotscript.gp
.cpp.o:
$(COMPILE) -c $< -o $@

11
control/examples/pegel/main.cpp
View file

@ -3,7 +3,7 @@
#include <b15f/b15f.h>
#include <b15f/plottyfile.h>
constexpr char * PLOT_FILE = "plot.bin";
const char PLOT_FILE[] = "plot.bin";
int main()
{
@ -12,7 +12,6 @@ int main()
PlottyFile pf;
uint16_t ba[1024];
uint16_t bb[1024];
const uint16_t sample_count = 1024;
const uint16_t delta = 1;
@ -31,14 +30,12 @@ int main()
uint8_t curve = 0;
drv.analogSequence(0, &ba[0], 0, 1, &bb[0], 0, 0, delta, sample_count);
drv.analogSequence(0, &ba[0], 0, 1, nullptr, 0, 0, delta, sample_count);
for(uint16_t x = 0; x < sample_count * delta; x += delta)
{
drv.analogWrite0(x);
uint16_t y = drv.analogRead(0);
std::cout << x << " - " << y << std::endl;
pf.addDot(Dot(x, y, curve));
std::cout << x << " - " << ba[x] << std::endl;
pf.addDot(Dot(x, ba[x], curve));
}
// speichern und plotty starten

38
control/src/drv/b15f.cpp
View file

@ -240,8 +240,12 @@ uint16_t B15F::analogRead(uint8_t channel)
void B15F::analogSequence(uint8_t channel_a, uint16_t* buffer_a, uint32_t offset_a, uint8_t channel_b, uint16_t* buffer_b, uint32_t offset_b, uint16_t start, int16_t delta, uint16_t count)
{
buffer_a += offset_a;
buffer_b += offset_b;
// check pointers
if(buffer_a)
buffer_a += offset_a;
if(buffer_b)
buffer_b += offset_b;
usart.clearInputBuffer();
usart.writeByte(RQ_ADC_DAC_STROKE);
@ -249,15 +253,33 @@ void B15F::analogSequence(uint8_t channel_a, uint16_t* buffer_a, uint32_t offset
usart.writeByte(channel_b);
usart.writeInt(start);
usart.writeInt(static_cast<uint16_t>(delta));
usart.writeInt(count);
usart.writeInt(count);
for(uint16_t i = 0; i < count; i++)
{
buffer_a[i] = usart.readInt();
buffer_b[i] = usart.readInt();
if(buffer_a[i] > 1023 || buffer_b[i] > 1023)
abort("Bad ADC data detected (2)");
if(buffer_a)
{
buffer_a[i] = usart.readInt();
if(buffer_a[i] > 1023) // check for broken usart connection
abort("Bad ADC data detected (2)");
}
else
{
usart.readInt();
}
if(buffer_b)
{
buffer_b[i] = usart.readInt();
if(buffer_b[i] > 1023) // check for broken usart connection
abort("Bad ADC data detected (3)");
}
else
{
usart.readInt();
}
}
uint8_t aw = usart.readByte();