From 9278c5d5ee7cc0d9799c687bddd5cda1838b0f29 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Mon, 16 May 2011 15:09:39 +0000
Subject: [PATCH] Add initial CC1101 wireless logic from Uros

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3617 42af7a65-404d-4744-a932-0658087f49c3
---
 configs/vsn/src/sif.c | 48 ++++++++++++++++++++++++++++++++++++++++++-
 configs/vsn/src/spi.c | 22 ++++++++++++++++----
 configs/vsn/src/vsn.h |  4 ++++
 3 files changed, 69 insertions(+), 5 deletions(-)

diff --git a/configs/vsn/src/sif.c b/configs/vsn/src/sif.c
index 5b86db77a4..acce5afc4f 100644
--- a/configs/vsn/src/sif.c
+++ b/configs/vsn/src/sif.c
@@ -79,6 +79,9 @@
 #include <nuttx/i2c.h>
 #include <nuttx/sensors/lis331dl.h>
 
+#include <nuttx/spi.h>
+#include <nuttx/wireless/cc1101.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -86,7 +89,7 @@
 #include <errno.h>
 
 #include "vsn.h"
-
+#include "stm32_gpio.h"
 
 
 /****************************************************************************
@@ -182,6 +185,8 @@ struct vsn_sif_s {
     struct i2c_dev_s    * i2c1;
     struct i2c_dev_s    * i2c2;
     
+    struct spi_dev_s    * spi2;
+    
     sem_t               exclusive_access;
 };
 
@@ -329,6 +334,8 @@ int sif_anout_init(void)
 
     vsn_sif.i2c1 = up_i2cinitialize(1);
     vsn_sif.i2c2 = up_i2cinitialize(2);
+    
+    vsn_sif.spi2 = up_spiinitialize(2);
 
     return OK;
 }
@@ -489,6 +496,8 @@ int sif_init(void)
  * Provides direct access to the sensor connector, readings, and diagnostic.
  **/
  
+extern void cc1101_eventcb(void);
+ 
 int sif_main(int argc, char *argv[])
 {
     if (argc >= 2) {	
@@ -583,6 +592,43 @@ int sif_main(int argc, char *argv[])
 
             return 0;
         }
+        else if (!strcmp(argv[1], "cc")) {
+            struct cc1101_dev_s * cc;
+            uint8_t buf[64];
+            int sta;
+            
+            cc = cc1101_init(vsn_sif.spi2, CC1101_PIN_GDO0, GPIO_CC1101_GDO0,
+                &cc1101_rfsettings_ISM1_868MHzGFSK100kbps);
+                
+            if (cc) {
+            
+                /* Work-around: enable falling edge, event and interrupt */
+                stm32_gpiosetevent(GPIO_CC1101_GDO0, false, true, true, cc1101_eventcb);
+            
+                /* Enable clock to ARM PLL, allowing to speed-up to 72 MHz */
+                cc1101_setgdo(cc, CC1101_PIN_GDO2, CC1101_GDO_CLK_XOSC3);
+                
+                cc1101_setchannel(cc, 0);   /* AV Test Hex, receive on that channel */
+                cc1101_receive(cc);          /* Enter RX mode */
+                while(1) 
+                {
+                    fflush(stdout);
+                    sta = cc1101_read(cc, buf, 64);
+                    if (sta > 0) {
+                        printf("Received %d bytes: rssi=%d [dBm], LQI=%d (CRC %s)\n", 
+                            sta, cc1101_calcRSSIdBm(buf[sta-2]), buf[sta-1]&0x7F,
+                            (buf[sta-1]&0x80)?"OK":"BAD");
+                            
+                        cc1101_write(cc, buf, 61);
+                        cc1101_send(cc);
+                        
+                        printf("Packet send back\n");
+                            
+                        cc1101_receive(cc);
+                    }
+                }
+            }
+        }
     }
 
     fprintf(stderr, "%s:\tinit\n\tgpio\tA B\n\tpwr\tval\n", argv[0]);
diff --git a/configs/vsn/src/spi.c b/configs/vsn/src/spi.c
index a452197b71..f3be9f5bf6 100644
--- a/configs/vsn/src/spi.c
+++ b/configs/vsn/src/spi.c
@@ -58,6 +58,7 @@
 #include "chip.h"
 #include "stm32_gpio.h"
 #include "stm32_internal.h"
+#include "stm32_waste.h"
 #include "vsn.h"
 
 
@@ -98,11 +99,13 @@ void weak_function stm32_spiinitialize(void)
    *       Configurations of SPI pins is performed in stm32_spi.c.
    *       Here, we only initialize chip select pins unique to the board architecture.
    */
+   
+#ifdef CONFIG_STM32_SPI2
+    stm32_configgpio(GPIO_CC1101_CS);
+#endif
 
 #ifdef CONFIG_STM32_SPI3
-
-  // Configure the SPI-based FRAM CS GPIO
-  stm32_configgpio(GPIO_FRAM_CS);
+    stm32_configgpio(GPIO_FRAM_CS);
 #endif
 }
 
@@ -147,7 +150,18 @@ uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
 
 void stm32_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
 {
-  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+    spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+    
+    if (devid == SPIDEV_WIRELESS) {
+    
+        stm32_gpiowrite(GPIO_CC1101_CS, !selected);
+
+        /* Wait for MISO to go low, indicates that Quart has stabilized */
+        if (selected) {
+            while( stm32_gpioread(GPIO_SPI2_MISO) ) up_waste();
+        }
+        
+    }
 }
 
 uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
diff --git a/configs/vsn/src/vsn.h b/configs/vsn/src/vsn.h
index c9058663ee..6a41b6bc1b 100644
--- a/configs/vsn/src/vsn.h
+++ b/configs/vsn/src/vsn.h
@@ -153,6 +153,10 @@
 
 /* Radio Connector */
 
+#define GPIO_CC1101_CS	(GPIO_OUTPUT|GPIO_CNF_OUTPP    |GPIO_MODE_50MHz|GPIO_PORTB|GPIO_PIN12|GPIO_OUTPUT_SET)
+#define GPIO_CC1101_GDO0 (GPIO_INPUT|GPIO_CNF_INFLOAT  |GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN9 )
+#define GPIO_CC1101_GDO2 (GPIO_INPUT|GPIO_CNF_INFLOAT  |GPIO_MODE_INPUT|GPIO_PORTD|GPIO_PIN0 )
+
 
 /* Expansion Connector */