I got no reply so I started to add the BUFF code to ft245r driver. The
patch is in the attachment, I did some debug prints (one may not like
the prefixes I use...) because the thing did not worked even with the
BUFF signal.
In the end I realized, that for a low active BUFF, it would be enough to
set the DDR to output the default zero.
Anyway, the clean ATmega32A did not responded, until I used a bitrate
below or equal of 2400. That is strange, but now I get that:
Programmer Type : ftdi_syncbb
Description :
Pin assignment : 1..8 = DBUS0..7, 9..12 = GPIO0..3
RESET = 5
SCK = 4
MOSI = 6
MISO = 7
BUFF = 8
ft245r: spi bitclk 2400 -> ft baudrate 4800
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e9502
avrdude: safemode: lfuse reads as E1
avrdude: safemode: hfuse reads as 99
avrdude: safemode: lfuse reads as E1
avrdude: safemode: hfuse reads as 99
avrdude: safemode: Fuses OK
avrdude done. Thank you.
Daniel
On 04/12/2013 06:15 PM, "Ing. Daniel Rozsnyó" wrote:
Hi,
I have some issues with the FT232 programmer code.. I had to define a
custom pinout, and the BUFF pin is not recognized. Is that okay, or the
ftdi_syncbb does not support the BUFF pin?
programmer
id = "kac-cmos";
type = "ftdi_syncbb";
connection_type = usb;
miso = 7; # /DCD
sck = 4; # /CTS
mosi = 6; # /DSR
reset = 5; # /DTR
buff = 8; # /RI
;
results in -v printout of:
Programmer Type : ftdi_syncbb
Description :
Pin assignment : 1..8 = DBUS0..7, 9..12 = GPIO0..3
RESET = 5
SCK = 4
MOSI = 6
MISO = 7
And the second issue is, that after that the text goes like:
ft245r: spi bitclk 75000 -> ft baudrate 150000
avrdude: ft245r_program_enable: failed
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
The chip I am using is however a FT232RQ:
Bus 003 Device 015: ID 0403:6001 Future Technology Devices
International, Ltd FT232 USB-Serial (UART) IC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0403 Future Technology Devices International, Ltd
idProduct 0x6001 FT232 USB-Serial (UART) IC
bcdDevice 6.00
iManufacturer 1 FTDI
iProduct 2 FT232R USB UART
iSerial 3 A4002rtk
bNumConfigurations 1
I am using:
avrdude: Version 5.11svn, compiled on Aug 13 2012 at 21:14:46
(with FT2232 in custom configurations it works perfectly!)
Daniel
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--- ft245r.orig.c 2013-04-13 06:16:49.586473130 +0200
+++ ft245r.c 2013-04-13 07:35:49.042523780 +0200
@@ -100,7 +100,7 @@
#define REQ_OUTSTANDINGS 10
//#define USE_INLINE_WRITE_PAGE
-#define FT245R_DEBUG 1
+#define FT245R_DEBUG 0
static struct ftdi_context *handle;
@@ -109,6 +109,7 @@
static unsigned char ft245r_mosi;
static unsigned char ft245r_reset;
static unsigned char ft245r_miso;
+static unsigned char ft245r_buff;
#define BUFSIZE 0x2000
@@ -168,6 +169,13 @@
static int ft245r_send(PROGRAMMER * pgm, unsigned char * buf, size_t len) {
int rv;
+ if ((verbose>=2) || FT245R_DEBUG) {
+ int i;
+ printf("FT245R < [%i]:",len);
+ if (len) for(i=0;i<len;i++) printf(" %02X",buf[i]);
+ printf("\n");
+ }
+
rv = ftdi_write_data(handle, buf, len);
if (len != rv) return -1;
return 0;
@@ -187,6 +195,13 @@
sem_post (&buf_space);
}
+ if ((verbose>=2) || FT245R_DEBUG) {
+ int i;
+ printf("FT245R > [%i]:",len);
+ if (len) for(i=0;i<len;i++) printf(" %02X",buf[i]);
+ printf("\n");
+ }
+
return 0;
}
@@ -265,6 +280,8 @@
static int set_reset(PROGRAMMER * pgm, int val) {
unsigned char buf[1];
+ if ((verbose>=2) || FT245R_DEBUG) printf("FT245R * RESET = %i (0x%02X)\n",val,ft245r_reset);
+
buf[0] = 0;
if (val) buf[0] |= ft245r_reset;
@@ -273,6 +290,21 @@
return 0;
}
+static int set_buff(PROGRAMMER * pgm, int val) {
+ unsigned char buf[1];
+
+ if (ft245r_buff) {
+ if ((verbose>=2) || FT245R_DEBUG) printf("FT245R * BUFF = %i (0x%02X)\n",val,ft245r_buff);
+
+ buf[0] = 0;
+ if (val) buf[0] |= ft245r_buff;
+
+ ft245r_send (pgm, buf, 1);
+ ft245r_recv (pgm, buf, 1);
+ }
+ return 0;
+}
+
static int ft245r_cmd(PROGRAMMER * pgm, unsigned char cmd[4],
unsigned char res[4]);
/*
@@ -358,16 +390,19 @@
check_pin(PIN_AVR_MOSI);
check_pin(PIN_AVR_MISO);
check_pin(PIN_AVR_RESET);
+ // no check for BUFF pin (should check at least the unsupported invert flag)
+ // check_pin(PPI_AVR_BUFF);
return ft245r_program_enable(pgm, p);
}
static void ft245r_disable(PROGRAMMER * pgm) {
+ set_buff(pgm, 1);
return;
}
static void ft245r_enable(PROGRAMMER * pgm) {
- /* Do nothing. */
+ set_buff(pgm, 0);
return;
}
@@ -506,6 +541,7 @@
setmybit(&ft245r_ddr, pgm->pinno[PIN_AVR_SCK], 1);
setmybit(&ft245r_ddr, pgm->pinno[PIN_AVR_MOSI], 1);
setmybit(&ft245r_ddr, pgm->pinno[PIN_AVR_RESET], 1);
+ setmybits(&ft245r_ddr, pgm->pinno[PPI_AVR_BUFF], 1);
ft245r_sck = 0;
setmybit(&ft245r_sck, pgm->pinno[PIN_AVR_SCK], 1);
@@ -515,7 +551,10 @@
setmybit(&ft245r_reset, pgm->pinno[PIN_AVR_RESET], 1);
ft245r_miso = 0;
setmybit(&ft245r_miso, pgm->pinno[PIN_AVR_MISO], 1);
+ ft245r_buff = 0;
+ setmybits(&ft245r_buff, pgm->pinno[PPI_AVR_BUFF], 1);
+ if ((verbose>=2) || FT245R_DEBUG) printf("FT245R * DDR = %02X\n",ft245r_ddr);
rv = ftdi_set_bitmode(handle, ft245r_ddr, BITMODE_SYNCBB); // set Synchronous BitBang
if (rv) {
@@ -550,6 +589,7 @@
static void ft245r_display(PROGRAMMER * pgm, const char * p) {
fprintf(stderr, "%sPin assignment : 1..8 = DBUS0..7, 9..12 = GPIO0..3\n",p);
pgm_display_generic_mask(pgm, p, SHOW_AVR_PINS);
+ pgm_display_generic_mask(pgm, p, (1<<PPI_AVR_BUFF));
}
static int ft245r_paged_write_gen(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
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