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stmdsp
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move drivers into namespaces

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pull/3/head
Clyne 4 years ago
parent 7f59ca704b
commit d060dce4ec
7 changed files with 149 additions and 130 deletions
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101
source/adc.cpp
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@ -18,7 +18,7 @@ constexpr static const ADCConfig adc_config = {
.difsel = 0
};
void adc_read_callback(ADCDriver *);
static void adc_read_callback(ADCDriver *);
/*constexpr*/ static ADCConversionGroup adc_group_config = {
.circular = false,
@ -46,61 +46,64 @@ constexpr static const GPTConfig gpt_config = {
static bool adc_is_read_finished = false;
void adc_init()
{
palSetPadMode(GPIOA, 0, PAL_MODE_INPUT_ANALOG);
gptStart(gptd, &gpt_config);
adcStart(adcd, &adc_config);
adcSTM32EnableVREF(adcd);
}
adcsample_t *adc_read(adcsample_t *buffer, size_t count)
{
adc_is_read_finished = false;
adcStartConversion(adcd, &adc_group_config, buffer, count);
gptStartContinuous(gptd, 100); // 10kHz
while (!adc_is_read_finished);
return buffer;
}
void adc_read_callback([[maybe_unused]] ADCDriver *driver)
{
gptStopTimer(gptd);
adc_is_read_finished = true;
}
void adc_set_rate(ADCRate rate)
namespace adc
{
uint32_t val = 0;
switch (rate) {
case ADCRate::R2P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_2P5);
break;
case ADCRate::R6P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_6P5);
break;
case ADCRate::R12P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_12P5);
break;
case ADCRate::R24P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_24P5);
break;
case ADCRate::R47P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_47P5);
break;
case ADCRate::R92P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_92P5);
break;
case ADCRate::R247P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_247P5);
break;
case ADCRate::R640P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_640P5);
break;
void init()
{
palSetPadMode(GPIOA, 0, PAL_MODE_INPUT_ANALOG);
gptStart(gptd, &gpt_config);
adcStart(adcd, &adc_config);
adcSTM32EnableVREF(adcd);
}
adcsample_t *read(adcsample_t *buffer, size_t count)
{
adc_is_read_finished = false;
adcStartConversion(adcd, &adc_group_config, buffer, count);
gptStartContinuous(gptd, 100); // 10kHz
while (!adc_is_read_finished);
return buffer;
}
void set_rate(rate r)
{
uint32_t val = 0;
switch (r) {
case rate::R2P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_2P5);
break;
case rate::R6P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_6P5);
break;
case rate::R12P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_12P5);
break;
case rate::R24P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_24P5);
break;
case rate::R47P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_47P5);
break;
case rate::R92P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_92P5);
break;
case rate::R247P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_247P5);
break;
case rate::R640P5:
val = ADC_SMPR1_SMP_AN5(ADC_SMPR_SMP_640P5);
break;
}
adc_group_config.smpr[0] = val;
}
adc_group_config.smpr[0] = val;
}

31
source/adc.hpp
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@ -14,20 +14,23 @@
#include "hal.h"
enum class ADCRate {
R2P5,
R6P5,
R12P5,
R24P5,
R47P5,
R92P5,
R247P5,
R640P5
};
void adc_init();
adcsample_t *adc_read(adcsample_t *buffer, size_t count);
void adc_set_rate(ADCRate rate);
namespace adc
{
enum class rate {
R2P5,
R6P5,
R12P5,
R24P5,
R47P5,
R92P5,
R247P5,
R640P5
};
void init();
adcsample_t *read(adcsample_t *buffer, size_t count);
void set_rate(rate r);
}
#endif // STMDSP_ADC_HPP_

39
source/dac.cpp
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@ -34,24 +34,27 @@ constexpr static const GPTConfig gpt_config = {
.dier = 0
};
void dac_init()
namespace dac
{
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
//palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
dacStart(dacd, &dac_config);
gptStart(gptd, &gpt_config);
}
void dac_write_start(dacsample_t *buffer, size_t count)
{
dacStartConversion(dacd, &dac_group_config, buffer, count);
gptStartContinuous(gptd, 1);
}
void dac_write_stop()
{
gptStopTimer(gptd);
dacStopConversion(dacd);
void init()
{
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
//palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
dacStart(dacd, &dac_config);
gptStart(gptd, &gpt_config);
}
void write_start(dacsample_t *buffer, size_t count)
{
dacStartConversion(dacd, &dac_group_config, buffer, count);
gptStartContinuous(gptd, 1);
}
void write_stop()
{
gptStopTimer(gptd);
dacStopConversion(dacd);
}
}

9
source/dac.hpp
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@ -14,9 +14,12 @@
#include "hal.h"
void dac_init();
void dac_write_start(dacsample_t *buffer, size_t count);
void dac_write_stop();
namespace dac
{
void init();
void write_start(dacsample_t *buffer, size_t count);
void write_stop();
}
#endif // STMDSP_DAC_HPP_

26
source/main.cpp
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@ -33,39 +33,39 @@ int main()
palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL); // LED
adc_init();
dac_init();
usbserial_init();
adc::init();
dac::init();
usbserial::init();
static unsigned int dac_sample_count = 2048;
while (true) {
if (usbserial_is_active()) {
if (usbserial::is_active()) {
// Expect to receive a byte command 'packet'.
if (char cmd[3]; usbserial_read(&cmd, 1) > 0) {
if (char cmd[3]; usbserial::read(&cmd, 1) > 0) {
switch (cmd[0]) {
case 'r': // Read in analog signal
if (usbserial_read(&cmd[1], 2) < 2)
if (usbserial::read(&cmd[1], 2) < 2)
break;
if (auto count = std::min(static_cast<unsigned int>(cmd[1] | (cmd[2] << 8)), adc_samples.size()); count > 0) {
adc_read(&adc_samples[0], count);
usbserial_write(adc_samples.data(), count * sizeof(adcsample_t));
adc::read(&adc_samples[0], count);
usbserial::write(adc_samples.data(), count * sizeof(adcsample_t));
}
break;
case 'W':
if (usbserial_read(&cmd[1], 2) < 2)
if (usbserial::read(&cmd[1], 2) < 2)
break;
if (auto count = std::min(static_cast<unsigned int>(cmd[1] | (cmd[2] << 8)), dac_samples.size()); count > 0)
dac_sample_count = count;
else
dac_write_stop();
dac::write_stop();
break;
case 'w':
if (usbserial_read(&dac_samples[0], 2 * dac_sample_count) != 2 * dac_sample_count)
if (usbserial::read(&dac_samples[0], 2 * dac_sample_count) != 2 * dac_sample_count)
break;
dac_write_start(&dac_samples[0], dac_sample_count);
dac::write_start(&dac_samples[0], dac_sample_count);
break;
case 'i': // Identify ourself as an stmdsp device
usbserial_write("stmdsp", 6);
usbserial::write("stmdsp", 6);
break;
default:
break;

61
source/usbserial.cpp
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@ -15,35 +15,38 @@
constexpr static const auto sdud = &SDU1;
void usbserial_init()
namespace usbserial
{
palSetPadMode(GPIOA, 11, PAL_MODE_ALTERNATE(10));
palSetPadMode(GPIOA, 12, PAL_MODE_ALTERNATE(10));
sduObjectInit(sdud);
sduStart(sdud, &serusbcfg);
// Reconnect bus so device can re-enumerate on reset
usbDisconnectBus(serusbcfg.usbp);
chThdSleepMilliseconds(1500);
usbStart(serusbcfg.usbp, &usbcfg);
usbConnectBus(serusbcfg.usbp);
}
bool usbserial_is_active()
{
return sdud->config->usbp->state == USB_ACTIVE;
}
size_t usbserial_read(void *buffer, size_t count)
{
auto bss = reinterpret_cast<BaseSequentialStream *>(sdud);
return streamRead(bss, static_cast<uint8_t *>(buffer), count);
}
size_t usbserial_write(const void *buffer, size_t count)
{
auto bss = reinterpret_cast<BaseSequentialStream *>(sdud);
return streamWrite(bss, static_cast<const uint8_t *>(buffer), count);
void init()
{
palSetPadMode(GPIOA, 11, PAL_MODE_ALTERNATE(10));
palSetPadMode(GPIOA, 12, PAL_MODE_ALTERNATE(10));
sduObjectInit(sdud);
sduStart(sdud, &serusbcfg);
// Reconnect bus so device can re-enumerate on reset
usbDisconnectBus(serusbcfg.usbp);
chThdSleepMilliseconds(1500);
usbStart(serusbcfg.usbp, &usbcfg);
usbConnectBus(serusbcfg.usbp);
}
bool is_active()
{
return sdud->config->usbp->state == USB_ACTIVE;
}
size_t read(void *buffer, size_t count)
{
auto bss = reinterpret_cast<BaseSequentialStream *>(sdud);
return streamRead(bss, static_cast<uint8_t *>(buffer), count);
}
size_t write(const void *buffer, size_t count)
{
auto bss = reinterpret_cast<BaseSequentialStream *>(sdud);
return streamWrite(bss, static_cast<const uint8_t *>(buffer), count);
}
}

12
source/usbserial.hpp
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@ -14,10 +14,14 @@
#include "hal.h"
void usbserial_init();
bool usbserial_is_active();
size_t usbserial_read(void *buffer, size_t count);
size_t usbserial_write(const void *buffer, size_t count);
namespace usbserial
{
void init();
bool is_active();
size_t read(void *buffer, size_t count);
size_t write(const void *buffer, size_t count);
}
#endif // STMDSP_USBSERIAL_HPP_

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