all cable: always display real used frequency

src/anlogicCable.cpp

@@ -83,10 +83,6 @@ AnlogicCable::AnlogicCable(uint32_t clkHZ, bool verbose):
 		throw std::exception();
 	}
 
-	if (clkHZ > 6000000) {
-		printInfo("Anlogic JTAG probe limited to 6MHz");
-		clkHZ = 6000000;
-	}
 	if (setClkFreq(clkHZ) < 0) {
 		cerr << "Fail to set frequency" << endl;
 		throw std::exception();
@@ -104,24 +100,41 @@ AnlogicCable::~AnlogicCable()
 int AnlogicCable::setClkFreq(uint32_t clkHZ)
 {
 	int actual_length;
-	int ret;
+	int ret, req_freq = clkHZ;
+
 	uint8_t buf[] = {ANLOGICCABLE_FREQ_CMD, 0};
-	if (clkHZ >= 6000000)
+
+	if (clkHZ > 6000000) {
+		printWarn("Anlogic JTAG probe limited to 6MHz");
+		clkHZ = 6000000;
+	}
+
+	if (clkHZ >= 6000000) {
 		buf[1] = ANLOGICCABLE_FREQ_6M;
-	else if (clkHZ >= 3000000)
+		clkHZ = 6000000;
+	} else if (clkHZ >= 3000000) {
 		buf[1] = ANLOGICCABLE_FREQ_3M;
-	else if (clkHZ >= 1000000)
+		clkHZ = 3000000;
+	} else if (clkHZ >= 1000000) {
 		buf[1] = ANLOGICCABLE_FREQ_1M;
-	else if (clkHZ >= 600000)
+		clkHZ = 1000000;
+	} else if (clkHZ >= 600000) {
 		buf[1] = ANLOGICCABLE_FREQ_600K;
-	else if (clkHZ >= 400000)
+		clkHZ = 600000;
+	} else if (clkHZ >= 400000) {
 		buf[1] = ANLOGICCABLE_FREQ_400K;
-	else if (clkHZ >= 200000)
+		clkHZ = 400000;
+	} else if (clkHZ >= 200000) {
 		buf[1] = ANLOGICCABLE_FREQ_200K;
-	else if (clkHZ >= 100000)
+		clkHZ = 200000;
+	} else if (clkHZ >= 100000) {
 		buf[1] = ANLOGICCABLE_FREQ_100K;
-	else if (clkHZ >= 90000)
+		clkHZ = 100000;
+	} else if (clkHZ >= 90000) {
 		buf[1] = ANLOGICCABLE_FREQ_90K;
+		clkHZ = 90000;
+	}
+
 	ret = libusb_bulk_transfer(dev_handle, ANLOGICCABLE_CONF_EP,
 			        buf, 2, &actual_length, 1000);
 	if (ret < 0) {
@@ -129,6 +142,9 @@ int AnlogicCable::setClkFreq(uint32_t clkHZ)
 		return -EXIT_FAILURE;
 	}
 
+	printWarn("Jtag frequency : requested " + std::to_string(req_freq) +
+			"Hz -> real " + std::to_string(clkHZ) + "Hz");
+
 	return clkHZ;
 }
 

src/dirtyJtag.cpp

@@ -79,10 +79,6 @@ DirtyJtag::DirtyJtag(uint32_t clkHZ, bool verbose):
 		throw std::exception();
 	}
 
-	if (clkHZ > 600000) {
-		printInfo("DirtyJTAG probe limited to 600kHz");
-		clkHZ = 600000;
-	}
 	if (setClkFreq(clkHZ) < 0) {
 		cerr << "Fail to set frequency" << endl;
 		throw std::exception();
@@ -100,7 +96,16 @@ DirtyJtag::~DirtyJtag()
 int DirtyJtag::setClkFreq(uint32_t clkHZ)
 {
 	int actual_length;
-	int ret;
+	int ret, req_freq = clkHZ;
+
+	if (clkHZ > 600000) {
+		printWarn("DirtyJTAG probe limited to 600kHz");
+		clkHZ = 600000;
+	}
+
+	printInfo("Jtag frequency : requested " + std::to_string(req_freq) +
+			"Hz -> real " + std::to_string(clkHZ) + "Hz");
+
 	uint8_t buf[] = {CMD_FREQ,
 					static_cast<uint8_t>(0xff & ((clkHZ / 1000) >> 8)),
 					static_cast<uint8_t>(0xff & ((clkHZ / 1000)     )),

src/ftdiJtagBitbang.cpp

@@ -25,6 +25,7 @@
 #include <string>
 #include <stdexcept>
 
+#include "display.hpp"
 #include "ftdiJtagBitbang.hpp"
 #include "ftdipp_mpsse.hpp"
 
@@ -87,8 +88,13 @@ FtdiJtagBitBang::~FtdiJtagBitBang()
 
 int FtdiJtagBitBang::setClkFreq(uint32_t clkHZ)
 {
-	if (clkHZ > 3000000)
+	uint32_t user_clk = clkHZ;
+	if (clkHZ > 3000000) {
+		printWarn("Jtag probe limited to 3MHz");
 		clkHZ = 3000000;
+	}
+	printInfo("Jtag frequency : requested " + std::to_string(user_clk) +
+			"Hz -> real " + std::to_string(clkHZ) + "Hz");
 	int ret = ftdi_set_baudrate(_ftdi, clkHZ);
 	printf("ret %d\n", ret);
 	return ret;

src/ftdipp_mpsse.cpp

@@ -11,6 +11,7 @@
 #endif
 #include <libusb.h>
 
+#include "display.hpp"
 #include "ftdipp_mpsse.hpp"
 
 using namespace std;
@@ -222,31 +223,40 @@ int FTDIpp_MPSSE::setClkFreq(uint32_t clkHZ, char use_divide_by_5)
 		use_divide_by_5 = false;
 	}
 
-    if ((use_divide_by_5 && _clkHZ > 6000000) || _clkHZ > 30000000) {
-        fprintf(stderr, "Error: too fast frequency\n");
-        return -1;
-    }
+	if (use_divide_by_5) {
+		if (_clkHZ > 6000000) {
+			printWarn("Jtag probe limited to 60MHz");
+			_clkHZ = 6000000;
+		}
+	} else {
+		if (_clkHZ > 30000000) {
+			printWarn("Jtag probe limited to 30MHz");
+			_clkHZ = 3000000;
+		}
+	}
 
-    presc = (base_freq /(_clkHZ * 2)) -1;
-    real_freq = base_freq / ((1+presc)*2);
-	if (real_freq > clkHZ)
+	presc = (base_freq /(_clkHZ * 2)) -1;
+	real_freq = base_freq / ((1+presc)*2);
+	if (real_freq > _clkHZ)
 		presc ++;
-    real_freq = base_freq / ((1+presc)*2);
-    display("presc : %d input freq : %d requested freq : %d real freq : %d\n",
+	real_freq = base_freq / ((1+presc)*2);
+	printInfo("Jtag frequency : requested " + std::to_string(clkHZ) +
+			"Hz -> real " + std::to_string(real_freq) + "Hz");
+	display("presc : %d input freq : %d requested freq : %d real freq : %d\n",
 			presc, base_freq, _clkHZ, real_freq);
-    buffer[1] = presc & 0xff;
-    buffer[2] = (presc >> 8) & 0xff;
+	buffer[1] = presc & 0xff;
+	buffer[2] = (presc >> 8) & 0xff;
 
 	mpsse_store(buffer, 3);
 	ret = mpsse_write();
-    if (ret < 0) {
-        fprintf(stderr, "Error: write for frequency return %d\n", ret);
-        return -1;
-    }
+	if (ret < 0) {
+		fprintf(stderr, "Error: write for frequency return %d\n", ret);
+		return -1;
+	}
 	ret = ftdi_read_data(_ftdi, buffer, 4);
 	ftdi_usb_purge_buffers(_ftdi);
 
-    return real_freq;
+	return real_freq;
 }
 
 int FTDIpp_MPSSE::mpsse_store(unsigned char c)
@@ -622,11 +632,11 @@ bool FTDIpp_MPSSE::search_with_dev(const string &device)
 
 	/* Get closest usb device parent (we need VIP/PID)  */
 	usbdeviceparent =
-	    udev_device_get_parent_with_subsystem_devtype(dev, "usb",
+		udev_device_get_parent_with_subsystem_devtype(dev, "usb",
 							  "usb_device");
 	if (!usbdeviceparent) {
 		printf
-		    ("Unable to find parent usb device! Is this actually an USB device ?\n");
+			("Unable to find parent usb device! Is this actually an USB device ?\n");
 		udev_device_unref(dev);
 		udev_unref(udev);
 		return false;

src/ftdipp_mpsse.hpp

@@ -74,7 +74,7 @@ class FTDIpp_MPSSE {
 		/* gpio */
 		bool __gpio_write(bool low_pins);
 	protected:
-		int _clkHZ;
+		uint32_t _clkHZ;
 		struct ftdi_context *_ftdi;
 		int _buffer_size;
 		int _num;

src/usbBlaster.cpp

@@ -118,6 +118,7 @@ void UsbBlaster::init_internal()
 int UsbBlaster::setClkFreq(uint32_t clkHZ)
 {
 	(void) clkHZ;
+	printWarn("USB-Blaster has a 24MHz fixed frequency");
 	return 1;
 }