From 722202c477817732716c29f00b37f754b7abf3a6 Mon Sep 17 00:00:00 2001
From: Bernhard Tittelbach <xro@realraum.at>
Date: Fri, 22 Jun 2012 02:19:00 +0000
Subject: rx detect works, still receiving mostly noise

git-svn-id: https://svn.spreadspace.org/mur.sat@550 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 software/hhd70dongle/c1101lib.c    | 15 ++++++---------
 software/hhd70dongle/c1101lib.h    |  6 ++++++
 software/hhd70dongle/hhd70.c       |  5 +++--
 software/hhd70dongle/hhd70dongle.c | 30 ++++++++++++++++++++++++------
 4 files changed, 39 insertions(+), 17 deletions(-)

(limited to 'software/hhd70dongle')

diff --git a/software/hhd70dongle/c1101lib.c b/software/hhd70dongle/c1101lib.c
index b0eed03..690d148 100644
--- a/software/hhd70dongle/c1101lib.c
+++ b/software/hhd70dongle/c1101lib.c
@@ -226,10 +226,11 @@ void c1101_init(void)
     //enable analog temperature sensor on GDO0
     c1101_spi_write_register(SPIC1101_ADDR_IOCFG0, 0x80);
     //enable RX FIFO interrupt (i.e. GPO2 pulls high if >= FIFOTHR bytes are in RX FIFO)
-    c1101_spi_write_register(SPIC1101_ADDR_IOCFG2, 0);
+    c1101_spi_write_register(SPIC1101_ADDR_IOCFG2, 0x41 ); //0x40, 0x42, 0x44, 0x47
     // FIFOTHR       RX FIFO and TX FIFO Thresholds
     // pull GPO high (interrupt) if more than 12 bytes in rx buffer (or less than 53 in tx)
-    c1101_spi_write_register(SPIC1101_ADDR_FIFOTHR, 2);
+    //c1101_spi_write_register(SPIC1101_ADDR_FIFOTHR, 2); //assert at 12 bytes in RX Fifo and 53 in TX Fifo
+    c1101_spi_write_register(SPIC1101_ADDR_FIFOTHR, 0);  //assert at 4 bytes in RX Fifo and 61 in TX Fifo
     // PKTCTRL0      Packet Automation Control
     //c1101_spi_write_register(SPIC1101_ADDR_PKTCTRL0, 0b0000000010); //crc disabled; use FIFOs; infinite packet length mode
     c1101_spi_write_register(SPIC1101_ADDR_PKTCTRL0, 0b0000000001); //crc disabled; use FIFOs; variable packet length mode (first TX FIFO byte must be length)
@@ -263,6 +264,9 @@ void c1101_init(void)
     c1101_spi_write_register(SPIC1101_ADDR_FSCAL2, 0x2A);
     c1101_spi_write_register(SPIC1101_ADDR_FSCAL1, 0x00);
     c1101_spi_write_register(SPIC1101_ADDR_FSCAL0, 0x1F);
+    //FREN0  TX Power:
+    c1101_spi_write_register(SPIC1101_ADDR_FREND0, 0x10);  //should be set using RF-Studio !!, for now, only use PA-Table Entry[0] no power ramping !! (FIXME: but should maybe be used)
+    c1101_spi_write_register(SPIC1101_ADDR_PATABLE_WRITE, 0xC0);  //write PATABLE[0] only, rest needs to be written in Burst-Mode !  set to max power 10dBm
 
     // note: for now: assume f_xosc to be 26 Mhz
     // for ~433.125 Mhz -> freq = 1091741, freq_offset = 0
@@ -335,13 +339,6 @@ char c1101_getStatus(void)
     hhd70_c1101_wait_chip_rdy();
     sb = c1101_spi_write_byte_ok_get_status(SPIC1101_ADDR_SNOP);
     hhd70_spi_cs_disable();
-    //debug start
-    char debug_sb[6];
-    CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 status:\r\n");
-    debug_sprint_int16hex(debug_sb, sb);
-    CDC_Device_SendString(&VirtualSerial_CDC_Interface,debug_sb);
-    CDC_Device_SendString(&VirtualSerial_CDC_Interface,"\r\n");
-    //debug end
     c1101_handleStatusByte(sb);
     return sb;
 }
diff --git a/software/hhd70dongle/c1101lib.h b/software/hhd70dongle/c1101lib.h
index 3b819da..4dad8a6 100644
--- a/software/hhd70dongle/c1101lib.h
+++ b/software/hhd70dongle/c1101lib.h
@@ -119,6 +119,12 @@
 #define SPIC1101_ADDR_FIFO_WRITE 0x3F
 #define SPIC1101_ADDR_FIFO_WRITE_BURST (0x3F | 0x40)
 
+#define SPIC1101_ADDR_PATABLE_READ (0x3E | 0x80)
+#define SPIC1101_ADDR_PATABLE_READ_BURST (0x3E | 0x80 | 0xC0)
+#define SPIC1101_ADDR_PATABLE_WRITE 0x3E
+#define SPIC1101_ADDR_PATABLE_WRITE_BURST (0x3E | 0x40)
+
+
 #define SPIC1101_SB_CHIP_NOT_RDY(x) (x & 0b10000000)
 #define SPIC1101_SB_IDLE(x) (x & 0b01110000) == 0
 #define SPIC1101_SB_RXMODE(x) (x & 0b01110000) == 0b0010000
diff --git a/software/hhd70dongle/hhd70.c b/software/hhd70dongle/hhd70.c
index 6b2ce5f..9b79797 100644
--- a/software/hhd70dongle/hhd70.c
+++ b/software/hhd70dongle/hhd70.c
@@ -37,7 +37,7 @@ void hhd70_init(void)
 {
     //configure Direction of SS / PB0 , MOSI and SCLK as Output to drive CS of CC1101
     SPI_DDR = (1<<MOSI)|(1<<SCK)|(1<<CS)|(1<<RE)|(1<<TE);
-    SPI_PORT = (1<<CS) | (1<<RE) | (1<<TE);        
+    SPI_PORT = (1<<CS) | (1<<RE) | (1<<TE) | (1<<GDO2);
     SPCR = (1<<SPE)|(1<<MSTR); // | (0<<DORD)  //select MSB first: DORD == 0
     // SPSR = (0<<SPI2X) // f_osc/4
     // SPSR = (1<<SPI2X) // f_osc/2
@@ -107,5 +107,6 @@ void hhd70_palna_off(void)
 
 int8_t hhd70_rx_data_available(void)
 {
-    return SPI_PINB_REG & (1 << GDO2);
+    //check if GDO2 pin has been pulled low by c1101
+    return (SPI_PINB_REG & (1 << GDO2)) == 0;
 }
\ No newline at end of file
diff --git a/software/hhd70dongle/hhd70dongle.c b/software/hhd70dongle/hhd70dongle.c
index 4e5560d..7e5b0ed 100644
--- a/software/hhd70dongle/hhd70dongle.c
+++ b/software/hhd70dongle/hhd70dongle.c
@@ -147,7 +147,7 @@ int main(void)
         c1101_spi_strobe_command(SPIC1101_ADDR_SRX); // enter RX - Mode
         _delay_ms(1000);
 
-        if (hhd70_rx_data_available() == 1)
+        if (hhd70_rx_data_available())
         {
             led_on();
             CDC_Device_SendString(&VirtualSerial_CDC_Interface,"RX: GDO2 pin HIGH\r\n");
@@ -159,16 +159,34 @@ int main(void)
             led_off();
         }
 
-        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rssi:\r\n");
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rssi: ");
         debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_RSSI));
         CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
-        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 tx bytes:\r\n");
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"\r\n");
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 tx bytes: ");
         debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_TXBYTES));
         CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
-        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rx bytes:\r\n");
-        debug_sprint_int16hex(write_buffer, c1101_spi_read_register(SPIC1101_ADDR_RXBYTES));
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"\r\n");
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 rx bytes: ");
+        int16_t num_rx_bytes = c1101_spi_read_register(SPIC1101_ADDR_RXBYTES);
+        debug_sprint_int16hex(write_buffer, num_rx_bytes);
         CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
-        c1101_spi_dump_registers_to_usb();
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"\r\n");
+        
+        //~ if (num_rx_bytes > 0)
+        //~ {
+            //~ led_on();
+            //~ CDC_Device_SendString(&VirtualSerial_CDC_Interface,"RX  Buffer Non-Empty\r\n");
+            //~ c1101_recieveData();
+            //~ led_off();
+        //~ }
+        
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"c1101 status byte: ");
+        debug_sprint_int16hex(write_buffer, c1101_getStatus());
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,write_buffer);
+        CDC_Device_SendString(&VirtualSerial_CDC_Interface,"\r\n");
+        
+        //~ c1101_spi_dump_registers_to_usb();
         write_buffer[0]='T';
         write_buffer[1]='e';
         write_buffer[2]='m';
-- 
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