X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=target%2Fadc-serial%2Fadc_serial.c;h=1f7b6880b1ffcb4133811cc7ad7ed8b9ce3781c7;hp=349f3d7e04e09afe4c683af5a3bfc9d47c80788b;hb=17d2432a8b9c15963cd3b821f025ad33972ef477;hpb=378227d869a3e8787c532c8c4e1563b44002c4b5

diff --git a/target/adc-serial/adc_serial.c b/target/adc-serial/adc_serial.c
index 349f3d7e..1f7b6880 100644
--- a/target/adc-serial/adc_serial.c
+++ b/target/adc-serial/adc_serial.c
@@ -405,7 +405,15 @@ struct cc_dma_channel __xdata dma_config;
 
 #define ADC_LEN	6
 
-uint16_t __xdata adc_output[ADC_LEN];
+/* The DMA engine writes to XDATA in MSB order */
+struct dma_xdata16 {
+	uint8_t	high;
+	uint8_t	low;
+};
+
+struct dma_xdata16 adc_output[ADC_LEN];
+
+#define DMA_XDATA16(a,n)	((uint16_t) ((a)[n].high << 8) | (uint16_t) (a[n].low))
 
 #define ADDRH(a)	(((uint16_t) (a)) >> 8)
 #define ADDRL(a)	(((uint16_t) (a)))
@@ -417,9 +425,9 @@ adc_init(void)
 			   DMA_CFG0_TMODE_REPEATED_SINGLE |
 			   DMA_CFG0_TRIGGER_ADC_CHALL);
 	dma_config.cfg1 = (DMA_CFG1_SRCINC_0 |
-			   DMA_CFG1_DESTINC_2 |
+			   DMA_CFG1_DESTINC_1 |
 			   DMA_CFG1_PRIORITY_NORMAL);
-	
+
 	dma_config.src_high = ADDRH(&ADCXDATA);
 	dma_config.src_low = ADDRL(&ADCXDATA);
 	dma_config.dst_high = ADDRH(adc_output);
@@ -434,7 +442,7 @@ adc_init(void)
 		  (1 << 3) |	/* battery voltage */
 		  (1 << 4) |	/* drogue sense */
 		  (1 << 5));	/* main sense */
-	
+
 	ADCCON1 = (ADCCON1_STSEL_START);	/* ST bit triggers */
 	ADCCON2 = (ADCCON2_SREF_VDD |		/* reference voltage is VDD */
 		   ADCCON2_SDIV_512 |		/* 12 bit ADC results */
@@ -518,45 +526,52 @@ usart_out_string(uint8_t *string)
 		usart_out_byte(b);
 }
 
-uint8_t __xdata	num_buffer[10];
+#define NUM_LEN 6
+
+uint8_t __xdata	num_buffer[NUM_LEN];
 uint8_t __xdata * __xdata num_ptr;
 
 void
 usart_out_number(uint16_t v)
 {
 
-	num_ptr = num_buffer + 10;
+	num_ptr = num_buffer + NUM_LEN;
 	*--num_ptr = '\0';
 	do {
 		*--num_ptr = '0' + v % 10;
 		v /= 10;
 	} while (v);
-	usart_out_string(num_ptr);
+	while (num_ptr != num_buffer)
+		*--num_ptr = ' ';
+	usart_out_string(num_buffer);
 }
 
+#define ADC(n)	DMA_XDATA16(adc_output,n)
+
 main ()
 {
-	P1DIR |= 2;
+	P1DIR = 3;
 	CLKCON = 0;
 	while (!(SLEEP & SLEEP_XOSC_STB))
 		;
-	
+
 	adc_init();
+	P1_0 = 1;
 	usart_init();
 	for (;;) {
 		adc_run();
 		usart_out_string("accel: ");
-		usart_out_number(adc_output[0]);
-		usart_out_string("pres: ");
-		usart_out_number(adc_output[1]);
-		usart_out_string("temp: ");
-		usart_out_number(adc_output[2]);
-		usart_out_string("batt: ");
-		usart_out_number(adc_output[3]);
-		usart_out_string("drogue: ");
-		usart_out_number(adc_output[4]);
+		usart_out_number(ADC(0));
+		usart_out_string(" pres: ");
+		usart_out_number(ADC(1));
+		usart_out_string(" temp: ");
+		usart_out_number(ADC(2));
+		usart_out_string(" batt: ");
+		usart_out_number(ADC(3));
+		usart_out_string(" drogue: ");
+		usart_out_number(ADC(4));
 		usart_out_string(" main: ");
-		usart_out_number(adc_output[5]);
+		usart_out_number(ADC(5));
 		usart_out_string("\r\n");
 		delay(10);
 	}