Diff: SWD.h

Revision:

0:86fde86e144f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SWD.h	Sat Sep 14 12:50:46 2013 +0000
@@ -0,0 +1,129 @@
+// SWD.h 2013/9/13
+#pragma once
+#include "mbed.h"
+
+#define SWD_OK     0x01
+#define SWD_WAIT   0x02
+#define SWD_FAULT  0x04
+#define SWD_ERROR  0x08
+
+#define SWD_APnDP  0x01
+#define SWD_RnW    0x02
+
+#define DP_ABORT       0<<0|0<<1|0x00
+#define DP_IDCODE      0<<0|1<<1|0x00
+#define DP_CTRL_STAT   0<<0|0<<1|0x04
+#define DP_CTRL_STAT_R 0<<0|1<<1|0x04
+#define DP_SELECT      0<<0|0<<1|0x08
+#define DP_RDBUFF      0<<0|1<<1|0x0c
+
+#define AP_CSW         1<<0|0<<1|0x00
+#define AP_CSW_R       1<<0|1<<1|0x00
+#define AP_TAR         1<<0|0<<1|0x04
+#define AP_TAR_R       1<<0|1<<1|0x04
+#define AP_DRW_W       1<<0|0<<1|0x0c
+#define AP_DRW_R       1<<0|1<<1|0x0c
+
+#define CSYSPWRUPACK 0x80000000
+#define CDBGPWRUPACK 0x20000000
+#define CSYSPWRUPREQ 0x40000000
+#define CDBGPWRUPREQ 0x10000000
+
+#define TRNNORMAL    0x00000000
+#define MASKLANE     0x00000f00
+
+// AP Control and Status Word definitions
+#define CSW_SIZE     0x00000007
+#define CSW_SIZE8    0x00000000
+#define CSW_SIZE16   0x00000001
+#define CSW_SIZE32   0x00000002
+#define CSW_ADDRINC  0x00000030
+#define CSW_NADDRINC 0x00000000
+#define CSW_SADDRINC 0x00000010
+#define CSW_PADDRINC 0x00000020
+#define CSW_DBGSTAT  0x00000040
+#define CSW_TINPROG  0x00000080
+#define CSW_HPROT    0x02000000
+#define CSW_MSTRTYPE 0x20000000
+#define CSW_MSTRCORE 0x00000000
+#define CSW_MSTRDBG  0x20000000
+#define CSW_RESERVED 0x01000000
+
+#define CSW_VALUE  (CSW_RESERVED | CSW_MSTRDBG | CSW_HPROT | CSW_DBGSTAT | CSW_SADDRINC)
+
+/** SWD(Serial Wire Debug) interface
+ * 
+ * Example:
+ * @code
+ * #include "SWD.h"
+ * #include "BaseDAP.h"
+ * #include "USBDAP.h"
+ * 
+ * USBDAP hid(64, 64, 0x0d28, 0x0204);
+ * 
+ * SWD swd(PTB8,PTB9,PTB10); // SWDIO(dp12),SWCLK(dp3),nReset(dp23)
+ * DigitalOut connected(LED_GREEN);
+ * DigitalOut running(LED_RED);
+ * class myDAP : public BaseDAP {
+ * public:
+ *     myDAP(SWD* swd):BaseDAP(swd){};
+ *     virtual void infoLED(int select, int value) {
+ *         switch(select) {
+ *             case 0: connected = value^1; running = 1; break;
+ *             case 1: running = value^1; connected = 1; break;
+ *         }
+ *     } 
+ * };
+ * 
+ * int main()
+ * {
+ *     HID_REPORT recv_report;
+ *     HID_REPORT send_report;
+ * 
+ *     myDAP* dap = new myDAP(&swd);
+ *     while(1) {
+ *         if(hid.readNB(&recv_report)) {
+ *             dap->Command(recv_report.data, send_report.data);
+ *             send_report.length = 64;
+ *             hid.send(&send_report);
+ *         }
+ *     }    
+ * }
+ * @endcode
+ */
+class SWD {
+public:
+    /** Create SWD(Serial Wire Debug) interface
+     * @param swdio SWD(swdio) pin
+     * @param swclk SWD(swclk) pin
+     * @param reset reset pin
+     */
+    SWD(PinName swdio, PinName swclk, PinName reset);
+    virtual ~SWD() {}
+    void Setup();
+    void SWJSequence(int count, const uint8_t* data);
+    uint8_t SWJPins(uint32_t value, uint32_t select ,int waittime_us = 0);
+    void SWJClock(uint32_t clock_hz);
+    void TransferConfigure(int idle_cycles, int retry_count);
+    void Configure(int turnaround, int data_phase);
+    uint8_t Transfer(uint8_t request, uint32_t *data);
+    __IO bool TransferAbort;
+    void reset();
+private:
+    uint8_t rawTransfer(uint8_t request, uint32_t *data);
+    void pin_delay();
+    void clock_cycle(int n = 1);
+    void write_bit(uint32_t data, int n = 1);
+    uint32_t read_bit(int n = 1);
+protected:
+    struct {
+        int turnaround;
+        int data_phase;
+    } conf;
+    int idle_cycles;
+    int retry_count;
+    int _cpu_delay_count;
+    DigitalInOut _swdio;
+    DigitalOut _swclk;
+    DigitalInOut _nreset;
+};