From 171dbe3c6f11d7970f06dfa88e5251c74a5da5a4 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@mur.at>
Date: Fri, 15 Feb 2013 01:02:19 +0000
Subject: added bias pwm for RFPA 3800 power

git-svn-id: https://svn.spreadspace.org/mur.sat@672 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 software/hhd70dongle/c1101lib.c    | 10 +++---
 software/hhd70dongle/hhd70.c       | 48 ++++++++++++++++++++++++++++
 software/hhd70dongle/hhd70.h       |  4 +++
 software/hhd70dongle/hhd70dongle.c | 65 ++++++++++++++++++++++----------------
 4 files changed, 95 insertions(+), 32 deletions(-)

diff --git a/software/hhd70dongle/c1101lib.c b/software/hhd70dongle/c1101lib.c
index d943048..d498ec2 100644
--- a/software/hhd70dongle/c1101lib.c
+++ b/software/hhd70dongle/c1101lib.c
@@ -491,11 +491,11 @@ char c1101_getMARCState(void)
     sb = c1101_spi_read_register(SPIC1101_ADDR_MARCSTATE);
     sb &= 0x1F;
     //debug start
-    char debug_sb[6];
-    printf("c1101 MARCSate:\r\n");
-    debug_sprint_int16hex(debug_sb, sb);
-    printf("%s", debug_sb);
-    printf("\r\n");
+    /* char debug_sb[6]; */
+    /* printf("c1101 MARCState:\r\n"); */
+    /* debug_sprint_int16hex(debug_sb, sb); */
+    /* printf("%s", debug_sb); */
+    /* printf("\r\n"); */
     //debug end
     return sb;
 }
diff --git a/software/hhd70dongle/hhd70.c b/software/hhd70dongle/hhd70.c
index e8c973b..2461c29 100644
--- a/software/hhd70dongle/hhd70.c
+++ b/software/hhd70dongle/hhd70.c
@@ -33,6 +33,29 @@
 
 #include "hhd70.h"
 
+#define BIAS_VAL OCR1BL
+
+static void hhd70_bias_init(void)
+{
+  DDRB |= (1<<PB6);
+  TCCR1B = 0;
+  TCNT1 = 0;
+  OCR1B = 0;
+  TCCR1A = (1<<COM1B1) | (1<<WGM10);
+  TCCR1B = (1<<WGM12);
+}
+
+static inline void hhd70_bias_on(void)
+{
+  TCCR1B = (TCCR1B & 0xF8) | (1<<CS10);
+}
+
+static inline void hhd70_bias_off(void)
+{
+  TCCR1B = (TCCR1B & 0xF8);
+  TCNT1 = 0;
+}
+
 void hhd70_init(void)
 {
     //configure Direction of SS / PB0 , MOSI and SCLK as Output to drive CS of CC1101
@@ -42,6 +65,7 @@ void hhd70_init(void)
     // SPSR = (0<<SPI2X) // f_osc/4
     // SPSR = (1<<SPI2X) // f_osc/2
     //  SPSR = (1<<SPI2X); (4MHz vs. 8MHz)
+    hhd70_bias_init();
 }
 
 void hhd70_config_GDO0_OOK_output(bool output_mode)
@@ -111,16 +135,19 @@ char hhd70_spi_read_byte(void)
 void hhd70_palna_txmode(void)
 {
     SPI_PORT |= (1<<TE);
+    hhd70_bias_on();   
 }
 
 void hhd70_palna_rxmode(void)
 {
     SPI_PORT &= ~(1<<TE);
+    hhd70_bias_off();
 }
 
 void hhd70_palna_off(void)
 {
     SPI_PORT |= (1<<TE);
+    hhd70_bias_off();
 }
 
 int8_t hhd70_rx_data_available(void)
@@ -128,3 +155,24 @@ int8_t hhd70_rx_data_available(void)
     //check if GDO2 pin has been pulled low by c1101
     return (SPI_PINB_REG & (1 << GDO2)) == 0;
 }
+
+void hhd70_bias_set(uint8_t val)
+{
+  BIAS_VAL = val;
+}
+
+uint8_t hhd70_bias_get(void)
+{
+  return BIAS_VAL;
+}
+
+void hhd70_bias_inc(void)
+{
+  BIAS_VAL = (BIAS_VAL < 253) ? BIAS_VAL + 2 : 255;
+}
+
+void hhd70_bias_dec(void)
+{
+  BIAS_VAL = (BIAS_VAL > 2) ? BIAS_VAL - 2 : 0;
+}
+
diff --git a/software/hhd70dongle/hhd70.h b/software/hhd70dongle/hhd70.h
index e8a4fa0..090c96a 100644
--- a/software/hhd70dongle/hhd70.h
+++ b/software/hhd70dongle/hhd70.h
@@ -66,5 +66,9 @@ int8_t hhd70_rx_data_available(void);
 void hhd70_config_GDO0_OOK_output(bool output_mode);
 void hhd70_set_OOK_GDO0_high(void);
 void hhd70_set_OOK_GDO0_low(void);
+void hhd70_bias_set(uint8_t val);
+uint8_t hhd70_bias_get(void);
+void hhd70_bias_inc(void);
+void hhd70_bias_dec(void);
 
 #endif
diff --git a/software/hhd70dongle/hhd70dongle.c b/software/hhd70dongle/hhd70dongle.c
index e3b0983..d094e6c 100644
--- a/software/hhd70dongle/hhd70dongle.c
+++ b/software/hhd70dongle/hhd70dongle.c
@@ -199,6 +199,7 @@ int main(void)
     //c1101 init now happens after pressing B, S or E
 
     hhd70_palna_rxmode();
+    hhd70_bias_set(255);
 
     enable_tx_part=false;
     enable_rx_part=false;
@@ -348,6 +349,16 @@ int main(void)
                 uint16_t khz = (hz % 1000000)/1000;
                 printf("Frequency is now: %d.%03d MHz\r\n", mhz, khz);
             }
+            else if ((char) recv_byte == 'p')
+            {
+                hhd70_bias_dec();
+                printf("Bias Power is now: %d\r\n", hhd70_bias_get());
+            }
+            else if ((char) recv_byte == 'P')
+            {
+                hhd70_bias_inc();
+                printf("Bias Power is now: %d\r\n", hhd70_bias_get());
+            }
         }
 
         CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
@@ -403,34 +414,34 @@ int main(void)
 
         if (enable_tx_part)
         {
-            write_buffer[0]='T';
-            write_buffer[1]='e';
-            write_buffer[2]='m';
-            write_buffer[3]='p';
-            write_buffer[4]='s';
-            write_buffer[5]=':';
-            adc_on();
-            _delay_ms(250);
-            printf("temp c1101: ");
-            debug_sprint_int16hex(write_buffer+6, c1101_measureTemp());
-            printf("%s", write_buffer+6);
-            printf("\r\n");
-            _delay_ms(250);
-            printf("temp atmega: ");
-            debug_sprint_int16hex(write_buffer+10, adc_read(ADCMUX_ADC12));
-            printf("%s", write_buffer+10);
-            printf("\r\n");
-            adc_off();
-            _delay_ms(250);
-            led_on();
-            printf("TX Data: String\r\n");
+            /* write_buffer[0]='T'; */
+            /* write_buffer[1]='e'; */
+            /* write_buffer[2]='m'; */
+            /* write_buffer[3]='p'; */
+            /* write_buffer[4]='s'; */
+            /* write_buffer[5]=':'; */
+            /* adc_on(); */
+            /* _delay_ms(250); */
+            /* printf("temp c1101: "); */
+            /* debug_sprint_int16hex(write_buffer+6, c1101_measureTemp()); */
+            /* printf("%s", write_buffer+6); */
+            /* printf("\r\n"); */
+            /* _delay_ms(250); */
+            /* printf("temp atmega: "); */
+            /* debug_sprint_int16hex(write_buffer+10, adc_read(ADCMUX_ADC12)); */
+            /* printf("%s", write_buffer+10); */
+            /* printf("\r\n"); */
+            /* adc_off(); */
+            /* _delay_ms(250); */
+            /* led_on(); */
+            /* printf("TX Data: String\r\n"); */
             c1101_transmitData_infPktMode("OE6EOF test mur.sat GFSK r:9k6 fdev:11kHz 1234567890123456789012345678901234567890 End of Test",93);
-            led_off();
-            _delay_ms(100);
-            led_on();
-            printf("TX Data: Temps\r\n");
-            c1101_transmitData_infPktMode((char*) write_buffer,14);
-            led_off();
+            /* led_off(); */
+            /* _delay_ms(100); */
+            /* led_on(); */
+            /* printf("TX Data: Temps\r\n"); */
+            /* c1101_transmitData_infPktMode((char*) write_buffer,14); */
+            /* led_off(); */
         }
 
 /*        if (enable_beacon_part)
-- 
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