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Add decibel control.

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This commit is contained in:
cnlohr
2024-10-09 03:03:32 -07:00
parent 147fdc514d
commit c1bdfe0acf
2 changed files with 67 additions and 91 deletions
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ch32v/ch32v203-goertzel/adcgoertzel.c
+66 -90
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@@ -251,13 +251,18 @@ static void SetupTimer1()
#ifdef ENABLE_OLED_SCOPE
#ifdef PLOTGUARD
// Command-mode, Set X, Disable Timer, Set Y, Enable Timer
// Done this way to prevent streaking.
uint8_t cmdxy[] = { 0x00, 0xd3, 0x30, 0xd5, 0xff, 0x00, 0xdc, 0x30, 0xd5, 0xf0 };
// There doesn't seem to be a way of truly pausing the scanout.
// GENERAL NOTE: This doesn't actually seem to help reduce streaking.
uint8_t cmdxy[] = { 0x00, 0xd3, 0x30, 0xd5, 0xff, 0xdc, 0x30, 0xd5, 0xf0 };
#else
// Only set xy plot, and make sure clock is cranked.
uint8_t cmdxy[] = { 0x00, 0xd3, 0x30, 0xdc, 0x30, 0xd5, 0xf0 };
#endif
void config_turbo_scope()
{
DMA1_Channel3->PADDR = (uint32_t)&SPI1->DATAR;
DMA1_Channel3->MADDR = (uint32_t)cmdxy;
DMA1_Channel3->CNTR = sizeof(cmdxy);
@@ -270,39 +275,23 @@ void config_turbo_scope()
DMA_Mode_Normal |
DMA_DIR_PeripheralDST;
// Turn on DMA channel 3
// Turn on DMA channel 3 (For SPI output)
DMA1_Channel3->CFGR |= DMA_CFGR1_EN;
// All display controls from here on out are made using DC = 0.
funDigitalWrite( SSD1306_DC_PIN, FUN_LOW );
SPI1->CTLR2 |= SPI_CTLR2_TXDMAEN;
}
void ssd1306_send_turbo(uint8_t *data, uint8_t sz)
{
funDigitalWrite( SSD1306_DC_PIN, FUN_LOW );
funDigitalWrite( SSD1306_CS_PIN, FUN_LOW );
// send data
while(sz--)
{
// wait for TXE
while(!(SPI1->STATR & SPI_STATR_TXE));
// Send byte
SPI1->DATAR = *data++;
}
// wait for not busy before exiting
while(SPI1->STATR & SPI_STATR_BSY);
funDigitalWrite( SSD1306_CS_PIN, FUN_HIGH );
}
static void PlotPoint( int x, int y )
{
funDigitalWrite( SSD1306_CS_PIN, FUN_HIGH );
cmdxy[2] = x; cmdxy[7] = y;
#ifdef PLOTGUARD
cmdxy[2] = x; cmdxy[6] = y;
#else
cmdxy[2] = x; cmdxy[4] = y;
#endif
DMA1_Channel3->CNTR = sizeof(cmdxy);
funDigitalWrite( SSD1306_CS_PIN, FUN_LOW );
DMA1_Channel3->CFGR |= DMA_CFGR1_EN;
@@ -546,66 +535,6 @@ static inline uint32_t gets2()
return ret;
}
void InnerLoop()
{
while(1){
#if 0
int adcz = adc_buffer[0];
for( k = 0; k < 128; k++ )
{
int y = adc_buffer[k]-adcz + 64;
if( y < 0 ) y = 0;
if( y > 127 ) y = 127;
ssd1306_drawPixel( k, y, 1 );
}
#endif
// Only display half of the list so the other half could
// be updated by the ISR.
#ifdef ENABLE_OLED
int pxa = 0;
int glread = qibaselogs_head;
for( pxa = 0; pxa < LOG_GOERTZEL_LIST; pxa++ )
{
uint32_t combiq = qibaselogs[glread];
glread = ( glread + 1 ) & ( LOG_GOERTZEL_LIST -1 );
int16_t rr = combiq & 0xffff;
int16_t ri = combiq >> 16;
rr = rr * 512 / (intensity_average);
ri = ri * 512 / (intensity_average);
rr += 64;
ri += 64;
if( rr < 0 ) rr = 0;
if( ri < 0 ) ri = 0;
if( rr > 127 ) rr = 127;
if( ri > 127 ) ri = 127;
ssd1306_drawPixel( rr, ri, 1 );
}
//char cts[32];
//snprintf( cts, 32, "%d", intensity_average );
//ssd1306_drawstr( 0, 0, cts, 1 );
ssd1306_refresh();
//static int ik = 0;
//printf( "%d %08x\n", ik, ssd1306_buffer[ik++] );
//if( ik == sizeof(ssd1306_buffer) ) ik = 0;
ssd1306_setbuf(0);
#endif
// Do nothing.
Delay_Ms(17);
}
}
uint8_t i2c_send_buffer[16];
void setup_i2c_dma(void)
{
@@ -630,8 +559,6 @@ void setup_i2c_dma(void)
DMA1_Channel6->CFGR |= DMA_CFGR1_EN;
NVIC_DisableIRQ(I2C1_EV_IRQn);
printf( "INTO\n" );
}
@@ -742,7 +669,56 @@ int main()
USBOTGSetup();
InnerLoop();
while(1){
#if 0
// To draw a sinewave...
int adcz = adc_buffer[0];
for( k = 0; k < 128; k++ )
{
int y = adc_buffer[k]-adcz + 64;
if( y < 0 ) y = 0;
if( y > 127 ) y = 127;
ssd1306_drawPixel( k, y, 1 );
}
#endif
// Only display half of the list so the other half could
// be updated by the ISR.
#ifdef ENABLE_OLED
int pxa = 0;
int glread = qibaselogs_head;
for( pxa = 0; pxa < LOG_GOERTZEL_LIST; pxa++ )
{
uint32_t combiq = qibaselogs[glread];
glread = ( glread + 1 ) & ( LOG_GOERTZEL_LIST -1 );
int16_t rr = combiq & 0xffff;
int16_t ri = combiq >> 16;
rr = rr * 512 / (intensity_average);
ri = ri * 512 / (intensity_average);
rr += 64;
ri += 64;
if( rr < 0 ) rr = 0;
if( ri < 0 ) ri = 0;
if( rr > 127 ) rr = 127;
if( ri > 127 ) ri = 127;
ssd1306_drawPixel( rr, ri, 1 );
}
ssd1306_refresh();
ssd1306_setbuf(0);
#endif
// Do nothing.
Delay_Ms(17);
}
}