Add SWD protocol support to buspirate (2nd try)
This is a second try for this patch. I removed the queues from the previous version. I made it compatible with SRST reset and added support for those features that could be supported in raw binary mode. Change-Id: I96fc06abbea9873e98b414f34afd9043fd9c2a41 Signed-off-by: Mateusz Manowiecki <segmentation@fault.pl> Reviewed-on: http://openocd.zylin.com/3960 Tested-by: jenkins Reviewed-by: Eric Work <work.eric@gmail.com> Reviewed-by: Thomas Jarosch <thomas.jarosch@intra2net.com> Reviewed-by: Jacob Alexander <haata@kiibohd.com> Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Mateusz Manowiecki
Tomas Vanek
parent
69325f6970
commit
6a4f5a4a67
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@ -22,6 +22,7 @@
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#endif
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#include <jtag/interface.h>
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#include <jtag/swd.h>
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#include <jtag/commands.h>
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#include <termios.h>
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@ -48,9 +49,21 @@ static void buspirate_stableclocks(int num_cycles);
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#define CMD_READ_ADCS 0x03
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/*#define CMD_TAP_SHIFT 0x04 // old protocol */
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#define CMD_TAP_SHIFT 0x05
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#define CMD_ENTER_RWIRE 0x05
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#define CMD_ENTER_OOCD 0x06
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#define CMD_UART_SPEED 0x07
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#define CMD_JTAG_SPEED 0x08
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#define CMD_RAW_PERIPH 0x40
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#define CMD_RAW_SPEED 0x60
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#define CMD_RAW_MODE 0x80
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/* raw-wire mode configuration */
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#define CMD_RAW_CONFIG_HIZ 0x00
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#define CMD_RAW_CONFIG_3V3 0x08
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#define CMD_RAW_CONFIG_2W 0x00
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#define CMD_RAW_CONFIG_3W 0x04
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#define CMD_RAW_CONFIG_MSB 0x00
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#define CMD_RAW_CONFIG_LSB 0x02
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/* Not all OSes have this speed defined */
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#if !defined(B1000000)
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@ -81,6 +94,18 @@ enum {
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SERIAL_FAST = 1
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};
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enum {
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SPEED_RAW_5_KHZ = 0x0,
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SPEED_RAW_50_KHZ = 0x1,
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SPEED_RAW_100_KHZ = 0x2,
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SPEED_RAW_400_KHZ = 0x3
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};
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/* SWD mode specific */
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static bool swd_mode;
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static int queued_retval;
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static char swd_features;
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static const cc_t SHORT_TIMEOUT = 1; /* Must be at least 1. */
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static const cc_t NORMAL_TIMEOUT = 10;
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@ -93,6 +118,12 @@ static char *buspirate_port;
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static enum tap_state last_tap_state = TAP_RESET;
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/* SWD interface */
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static int buspirate_swd_init(void);
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static void buspirate_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk);
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static void buspirate_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk);
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static int buspirate_swd_switch_seq(enum swd_special_seq seq);
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static int buspirate_swd_run_queue(void);
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/* TAP interface */
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static void buspirate_tap_init(void);
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@ -103,16 +134,24 @@ static void buspirate_tap_append_scan(int length, uint8_t *buffer,
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static void buspirate_tap_make_space(int scan, int bits);
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static void buspirate_reset(int trst, int srst);
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static void buspirate_set_feature(int, char, char);
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static void buspirate_set_mode(int, char);
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static void buspirate_set_speed(int, char);
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/* low level interface */
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static void buspirate_bbio_enable(int);
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static void buspirate_jtag_reset(int);
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static void buspirate_jtag_enable(int);
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static unsigned char buspirate_jtag_command(int, char *, int);
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static void buspirate_jtag_set_speed(int, char);
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static void buspirate_jtag_set_mode(int, char);
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static void buspirate_jtag_set_feature(int, char, char);
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static void buspirate_jtag_get_adcs(int);
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/* low level two-wire interface */
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static void buspirate_swd_set_speed(int, char);
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static void buspirate_swd_set_feature(int, char, char);
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static void buspirate_swd_set_mode(int, char);
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/* low level HW communication interface */
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static int buspirate_serial_open(char *port);
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static int buspirate_serial_setspeed(int fd, char speed, cc_t timeout);
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@ -295,18 +334,20 @@ static int buspirate_init(void)
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return ERROR_JTAG_INIT_FAILED;
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}
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buspirate_jtag_enable(buspirate_fd);
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buspirate_bbio_enable(buspirate_fd);
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if (buspirate_baudrate != SERIAL_NORMAL)
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buspirate_jtag_set_speed(buspirate_fd, SERIAL_FAST);
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if (swd_mode || buspirate_baudrate != SERIAL_NORMAL)
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buspirate_set_speed(buspirate_fd, SERIAL_FAST);
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LOG_INFO("Buspirate Interface ready!");
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LOG_INFO("Buspirate %s Interface ready!", swd_mode ? "SWD" : "JTAG");
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buspirate_tap_init();
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buspirate_jtag_set_mode(buspirate_fd, buspirate_pinmode);
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buspirate_jtag_set_feature(buspirate_fd, FEATURE_VREG,
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if (!swd_mode)
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buspirate_tap_init();
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buspirate_set_mode(buspirate_fd, buspirate_pinmode);
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buspirate_set_feature(buspirate_fd, FEATURE_VREG,
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(buspirate_vreg == 1) ? ACTION_ENABLE : ACTION_DISABLE);
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buspirate_jtag_set_feature(buspirate_fd, FEATURE_PULLUP,
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buspirate_set_feature(buspirate_fd, FEATURE_PULLUP,
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(buspirate_pullup == 1) ? ACTION_ENABLE : ACTION_DISABLE);
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buspirate_reset(0, 0);
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@ -316,9 +357,9 @@ static int buspirate_init(void)
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static int buspirate_quit(void)
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{
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LOG_INFO("Shutting down buspirate.");
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buspirate_jtag_set_mode(buspirate_fd, MODE_HIZ);
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buspirate_set_mode(buspirate_fd, MODE_HIZ);
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buspirate_set_speed(buspirate_fd, SERIAL_NORMAL);
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buspirate_jtag_set_speed(buspirate_fd, SERIAL_NORMAL);
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buspirate_jtag_reset(buspirate_fd);
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buspirate_serial_close(buspirate_fd);
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@ -336,6 +377,10 @@ COMMAND_HANDLER(buspirate_handle_adc_command)
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if (buspirate_fd == -1)
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return ERROR_OK;
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/* unavailable in SWD mode */
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if (swd_mode)
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return ERROR_OK;
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/* send the command */
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buspirate_jtag_get_adcs(buspirate_fd);
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@ -382,11 +427,11 @@ COMMAND_HANDLER(buspirate_handle_led_command)
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if (atoi(CMD_ARGV[0]) == 1) {
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/* enable led */
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buspirate_jtag_set_feature(buspirate_fd, FEATURE_LED,
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buspirate_set_feature(buspirate_fd, FEATURE_LED,
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ACTION_ENABLE);
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} else if (atoi(CMD_ARGV[0]) == 0) {
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/* disable led */
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buspirate_jtag_set_feature(buspirate_fd, FEATURE_LED,
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buspirate_set_feature(buspirate_fd, FEATURE_LED,
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ACTION_DISABLE);
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} else {
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LOG_ERROR("usage: buspirate_led <1|0>");
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@ -492,10 +537,22 @@ static const struct command_registration buspirate_command_handlers[] = {
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COMMAND_REGISTRATION_DONE
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};
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static const struct swd_driver buspirate_swd = {
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.init = buspirate_swd_init,
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.switch_seq = buspirate_swd_switch_seq,
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.read_reg = buspirate_swd_read_reg,
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.write_reg = buspirate_swd_write_reg,
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.run = buspirate_swd_run_queue,
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};
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static const char * const buspirate_transports[] = { "jtag", "swd", NULL };
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struct jtag_interface buspirate_interface = {
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.name = "buspirate",
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.execute_queue = buspirate_execute_queue,
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.commands = buspirate_command_handlers,
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.transports = buspirate_transports,
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.swd = &buspirate_swd,
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.init = buspirate_init,
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.quit = buspirate_quit
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};
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@ -799,7 +856,7 @@ static void buspirate_tap_append_scan(int length, uint8_t *buffer,
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tap_pending_scans_num++;
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}
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/*************** jtag wrapper functions *********************/
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/*************** wrapper functions *********************/
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/* (1) assert or (0) deassert reset lines */
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static void buspirate_reset(int trst, int srst)
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@ -807,33 +864,148 @@ static void buspirate_reset(int trst, int srst)
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LOG_DEBUG("trst: %i, srst: %i", trst, srst);
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if (trst)
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buspirate_jtag_set_feature(buspirate_fd,
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FEATURE_TRST, ACTION_DISABLE);
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buspirate_set_feature(buspirate_fd, FEATURE_TRST, ACTION_DISABLE);
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else
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buspirate_jtag_set_feature(buspirate_fd,
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FEATURE_TRST, ACTION_ENABLE);
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buspirate_set_feature(buspirate_fd, FEATURE_TRST, ACTION_ENABLE);
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if (srst)
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buspirate_jtag_set_feature(buspirate_fd,
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FEATURE_SRST, ACTION_DISABLE);
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buspirate_set_feature(buspirate_fd, FEATURE_SRST, ACTION_DISABLE);
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else
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buspirate_jtag_set_feature(buspirate_fd,
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FEATURE_SRST, ACTION_ENABLE);
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buspirate_set_feature(buspirate_fd, FEATURE_SRST, ACTION_ENABLE);
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}
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static void buspirate_set_feature(int fd, char feat, char action)
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{
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if (swd_mode)
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buspirate_swd_set_feature(fd, feat, action);
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else
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buspirate_jtag_set_feature(fd, feat, action);
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}
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static void buspirate_set_mode(int fd, char mode)
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{
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if (swd_mode)
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buspirate_swd_set_mode(fd, mode);
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else
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buspirate_jtag_set_mode(fd, mode);
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}
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static void buspirate_set_speed(int fd, char speed)
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{
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if (swd_mode)
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buspirate_swd_set_speed(fd, speed);
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else
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buspirate_jtag_set_speed(fd, speed);
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}
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/*************** swd lowlevel functions ********************/
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static void buspirate_swd_set_speed(int fd, char speed)
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{
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int ret;
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char tmp[1];
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LOG_DEBUG("Buspirate speed setting in SWD mode defaults to 400 kHz");
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/* speed settings */
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tmp[0] = CMD_RAW_SPEED | SPEED_RAW_400_KHZ;
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buspirate_serial_write(fd, tmp, 1);
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ret = buspirate_serial_read(fd, tmp, 1);
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if (ret != 1) {
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LOG_ERROR("Buspirate did not answer correctly");
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exit(-1);
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}
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if (tmp[0] != 1) {
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LOG_ERROR("Buspirate did not reply as expected to the speed change command");
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exit(-1);
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}
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}
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static void buspirate_swd_set_mode(int fd, char mode)
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{
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int ret;
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char tmp[1];
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/* raw-wire mode configuration */
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if (mode == MODE_HIZ)
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tmp[0] = CMD_RAW_MODE | CMD_RAW_CONFIG_LSB;
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else
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tmp[0] = CMD_RAW_MODE | CMD_RAW_CONFIG_LSB | CMD_RAW_CONFIG_3V3;
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buspirate_serial_write(fd, tmp, 1);
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ret = buspirate_serial_read(fd, tmp, 1);
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if (ret != 1) {
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LOG_ERROR("Buspirate did not answer correctly");
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exit(-1);
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}
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if (tmp[0] != 1) {
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LOG_ERROR("Buspirate did not reply as expected to the configure command");
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exit(-1);
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}
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}
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static void buspirate_swd_set_feature(int fd, char feat, char action)
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{
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int ret;
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char tmp[1];
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switch (feat) {
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case FEATURE_TRST:
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LOG_DEBUG("Buspirate TRST feature not available in SWD mode");
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return;
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case FEATURE_LED:
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LOG_ERROR("Buspirate LED feature not available in SWD mode");
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return;
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case FEATURE_SRST:
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swd_features = (action == ACTION_ENABLE) ? swd_features | 0x02 : swd_features & 0x0D;
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break;
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case FEATURE_PULLUP:
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swd_features = (action == ACTION_ENABLE) ? swd_features | 0x04 : swd_features & 0x0B;
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break;
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case FEATURE_VREG:
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swd_features = (action == ACTION_ENABLE) ? swd_features | 0x08 : swd_features & 0x07;
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break;
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default:
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LOG_DEBUG("Buspirate unknown feature %d", feat);
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return;
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}
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tmp[0] = CMD_RAW_PERIPH | swd_features;
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buspirate_serial_write(fd, tmp, 1);
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ret = buspirate_serial_read(fd, tmp, 1);
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if (ret != 1) {
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LOG_DEBUG("Buspirate feature %d not supported in SWD mode", feat);
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} else if (tmp[0] != 1) {
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LOG_ERROR("Buspirate did not reply as expected to the configure command");
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exit(-1);
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}
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}
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/*************** jtag lowlevel functions ********************/
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static void buspirate_jtag_enable(int fd)
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static void buspirate_bbio_enable(int fd)
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{
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int ret;
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char command;
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const char *mode_answers[2] = { "OCD1", "RAW1" };
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const char *correct_ans = NULL;
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char tmp[21] = { [0 ... 20] = 0x00 };
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int done = 0;
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int cmd_sent = 0;
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LOG_DEBUG("Entering binary mode");
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if (swd_mode) {
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command = CMD_ENTER_RWIRE;
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correct_ans = mode_answers[1];
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} else {
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command = CMD_ENTER_OOCD;
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correct_ans = mode_answers[0];
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}
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LOG_DEBUG("Entering binary mode, that is %s", correct_ans);
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buspirate_serial_write(fd, tmp, 20);
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usleep(10000);
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/* reads 1 to n "BBIO1"s and one "OCD1" */
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/* reads 1 to n "BBIO1"s and one "OCD1" or "RAW1" */
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while (!done) {
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ret = buspirate_serial_read(fd, tmp, 4);
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if (ret != 4) {
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@ -854,14 +1026,14 @@ static void buspirate_jtag_enable(int fd)
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}
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if (cmd_sent == 0) {
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cmd_sent = 1;
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tmp[0] = CMD_ENTER_OOCD;
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tmp[0] = command;
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ret = buspirate_serial_write(fd, tmp, 1);
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if (ret != 1) {
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LOG_ERROR("error reading");
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exit(-1);
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}
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}
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} else if (strncmp(tmp, "OCD1", 4) == 0)
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} else if (strncmp(tmp, correct_ans, 4) == 0)
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done = 1;
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else {
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LOG_ERROR("Buspirate did not answer correctly! "
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@ -1124,3 +1296,240 @@ static void buspirate_print_buffer(char *buf, int size)
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if (line[0] != 0)
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LOG_DEBUG("%s", line);
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}
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/************************* SWD related stuff **********/
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static int buspirate_swd_init(void)
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{
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LOG_INFO("Buspirate SWD mode enabled");
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swd_mode = true;
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return ERROR_OK;
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}
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static int buspirate_swd_switch_seq(enum swd_special_seq seq)
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{
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const uint8_t *sequence;
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int sequence_len;
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char tmp[64];
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switch (seq) {
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case LINE_RESET:
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LOG_DEBUG("SWD line reset");
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sequence = swd_seq_line_reset;
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sequence_len = DIV_ROUND_UP(swd_seq_line_reset_len, 8);
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break;
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case JTAG_TO_SWD:
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LOG_DEBUG("JTAG-to-SWD");
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sequence = swd_seq_jtag_to_swd;
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sequence_len = DIV_ROUND_UP(swd_seq_jtag_to_swd_len, 8);
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break;
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case SWD_TO_JTAG:
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LOG_DEBUG("SWD-to-JTAG");
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sequence = swd_seq_swd_to_jtag;
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sequence_len = DIV_ROUND_UP(swd_seq_swd_to_jtag_len, 8);
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break;
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default:
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LOG_ERROR("Sequence %d not supported", seq);
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return ERROR_FAIL;
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}
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/* FIXME: all above sequences fit into one pirate command for now
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* but it may cause trouble later
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*/
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tmp[0] = 0x10 + ((sequence_len - 1) & 0x0F);
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memcpy(tmp + 1, sequence, sequence_len);
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buspirate_serial_write(buspirate_fd, tmp, sequence_len + 1);
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buspirate_serial_read(buspirate_fd, tmp, sequence_len + 1);
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return ERROR_OK;
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}
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static uint8_t buspirate_swd_write_header(uint8_t cmd)
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{
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char tmp[8];
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int to_send;
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|
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tmp[0] = 0x10; /* bus pirate: send 1 byte */
|
||||
tmp[1] = cmd; /* swd cmd */
|
||||
tmp[2] = 0x07; /* ack __x */
|
||||
tmp[3] = 0x07; /* ack _x_ */
|
||||
tmp[4] = 0x07; /* ack x__ */
|
||||
tmp[5] = 0x07; /* write mode trn_1 */
|
||||
tmp[6] = 0x07; /* write mode trn_2 */
|
||||
|
||||
to_send = ((cmd & SWD_CMD_RnW) == 0) ? 7 : 5;
|
||||
buspirate_serial_write(buspirate_fd, tmp, to_send);
|
||||
|
||||
/* read ack */
|
||||
buspirate_serial_read(buspirate_fd, tmp, 2); /* drop pirate command ret vals */
|
||||
buspirate_serial_read(buspirate_fd, tmp, to_send - 2); /* ack bits */
|
||||
|
||||
return tmp[2] << 2 | tmp[1] << 1 | tmp[0];
|
||||
}
|
||||
|
||||
static void buspirate_swd_idle_clocks(uint32_t no_bits)
|
||||
{
|
||||
uint32_t no_bytes;
|
||||
char tmp[20];
|
||||
|
||||
no_bytes = (no_bits + 7) / 8;
|
||||
memset(tmp + 1, 0x00, sizeof(tmp) - 1);
|
||||
|
||||
/* unfortunately bus pirate misbehaves when clocks are sent in parts
|
||||
* so we need to limit at 128 clock cycles
|
||||
*/
|
||||
if (no_bytes > 16)
|
||||
no_bytes = 16;
|
||||
|
||||
while (no_bytes) {
|
||||
uint8_t to_send = no_bytes > 16 ? 16 : no_bytes;
|
||||
tmp[0] = 0x10 + ((to_send - 1) & 0x0F);
|
||||
|
||||
buspirate_serial_write(buspirate_fd, tmp, to_send + 1);
|
||||
buspirate_serial_read(buspirate_fd, tmp, to_send + 1);
|
||||
|
||||
no_bytes -= to_send;
|
||||
}
|
||||
}
|
||||
|
||||
static void buspirate_swd_clear_sticky_errors(void)
|
||||
{
|
||||
buspirate_swd_write_reg(swd_cmd(false, false, DP_ABORT),
|
||||
STKCMPCLR | STKERRCLR | WDERRCLR | ORUNERRCLR, 0);
|
||||
}
|
||||
|
||||
static void buspirate_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
|
||||
{
|
||||
char tmp[16];
|
||||
|
||||
LOG_DEBUG("buspirate_swd_read_reg");
|
||||
assert(cmd & SWD_CMD_RnW);
|
||||
|
||||
if (queued_retval != ERROR_OK) {
|
||||
LOG_DEBUG("Skip buspirate_swd_read_reg because queued_retval=%d", queued_retval);
|
||||
return;
|
||||
}
|
||||
|
||||
cmd |= SWD_CMD_START | SWD_CMD_PARK;
|
||||
uint8_t ack = buspirate_swd_write_header(cmd);
|
||||
|
||||
/* do a read transaction */
|
||||
tmp[0] = 0x06; /* 4 data bytes */
|
||||
tmp[1] = 0x06;
|
||||
tmp[2] = 0x06;
|
||||
tmp[3] = 0x06;
|
||||
tmp[4] = 0x07; /* parity bit */
|
||||
tmp[5] = 0x21; /* 2 turnaround clocks */
|
||||
|
||||
buspirate_serial_write(buspirate_fd, tmp, 6);
|
||||
buspirate_serial_read(buspirate_fd, tmp, 6);
|
||||
|
||||
/* store the data and parity */
|
||||
uint32_t data = (uint8_t) tmp[0];
|
||||
data |= (uint8_t) tmp[1] << 8;
|
||||
data |= (uint8_t) tmp[2] << 16;
|
||||
data |= (uint8_t) tmp[3] << 24;
|
||||
int parity = tmp[4] ? 0x01 : 0x00;
|
||||
|
||||
LOG_DEBUG("%s %s %s reg %X = %08"PRIx32,
|
||||
ack == SWD_ACK_OK ? "OK" : ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK",
|
||||
cmd & SWD_CMD_APnDP ? "AP" : "DP",
|
||||
cmd & SWD_CMD_RnW ? "read" : "write",
|
||||
(cmd & SWD_CMD_A32) >> 1,
|
||||
data);
|
||||
|
||||
switch (ack) {
|
||||
case SWD_ACK_OK:
|
||||
if (parity != parity_u32(data)) {
|
||||
LOG_DEBUG("Read data parity mismatch %x %x", parity, parity_u32(data));
|
||||
queued_retval = ERROR_FAIL;
|
||||
return;
|
||||
}
|
||||
if (value)
|
||||
*value = data;
|
||||
if (cmd & SWD_CMD_APnDP)
|
||||
buspirate_swd_idle_clocks(ap_delay_clk);
|
||||
return;
|
||||
case SWD_ACK_WAIT:
|
||||
LOG_DEBUG("SWD_ACK_WAIT");
|
||||
buspirate_swd_clear_sticky_errors();
|
||||
return;
|
||||
case SWD_ACK_FAULT:
|
||||
LOG_DEBUG("SWD_ACK_FAULT");
|
||||
queued_retval = ack;
|
||||
return;
|
||||
default:
|
||||
LOG_DEBUG("No valid acknowledge: ack=%d", ack);
|
||||
queued_retval = ack;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static void buspirate_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
|
||||
{
|
||||
char tmp[16];
|
||||
|
||||
LOG_DEBUG("buspirate_swd_write_reg");
|
||||
assert(!(cmd & SWD_CMD_RnW));
|
||||
|
||||
if (queued_retval != ERROR_OK) {
|
||||
LOG_DEBUG("Skip buspirate_swd_write_reg because queued_retval=%d", queued_retval);
|
||||
return;
|
||||
}
|
||||
|
||||
cmd |= SWD_CMD_START | SWD_CMD_PARK;
|
||||
uint8_t ack = buspirate_swd_write_header(cmd);
|
||||
|
||||
/* do a write transaction */
|
||||
tmp[0] = 0x10 + ((4 + 1 - 1) & 0xF); /* bus pirate: send 4+1 bytes */
|
||||
buf_set_u32((uint8_t *) tmp + 1, 0, 32, value);
|
||||
/* write sequence ends with parity bit and 7 idle ticks */
|
||||
tmp[5] = parity_u32(value) ? 0x01 : 0x00;
|
||||
|
||||
buspirate_serial_write(buspirate_fd, tmp, 6);
|
||||
buspirate_serial_read(buspirate_fd, tmp, 6);
|
||||
|
||||
LOG_DEBUG("%s %s %s reg %X = %08"PRIx32,
|
||||
ack == SWD_ACK_OK ? "OK" : ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK",
|
||||
cmd & SWD_CMD_APnDP ? "AP" : "DP",
|
||||
cmd & SWD_CMD_RnW ? "read" : "write",
|
||||
(cmd & SWD_CMD_A32) >> 1,
|
||||
value);
|
||||
|
||||
switch (ack) {
|
||||
case SWD_ACK_OK:
|
||||
if (cmd & SWD_CMD_APnDP)
|
||||
buspirate_swd_idle_clocks(ap_delay_clk);
|
||||
return;
|
||||
case SWD_ACK_WAIT:
|
||||
LOG_DEBUG("SWD_ACK_WAIT");
|
||||
buspirate_swd_clear_sticky_errors();
|
||||
return;
|
||||
case SWD_ACK_FAULT:
|
||||
LOG_DEBUG("SWD_ACK_FAULT");
|
||||
queued_retval = ack;
|
||||
return;
|
||||
default:
|
||||
LOG_DEBUG("No valid acknowledge: ack=%d", ack);
|
||||
queued_retval = ack;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static int buspirate_swd_run_queue(void)
|
||||
{
|
||||
LOG_DEBUG("buspirate_swd_run_queue");
|
||||
/* A transaction must be followed by another transaction or at least 8 idle cycles to
|
||||
* ensure that data is clocked through the AP. */
|
||||
buspirate_swd_idle_clocks(8);
|
||||
|
||||
int retval = queued_retval;
|
||||
queued_retval = ERROR_OK;
|
||||
LOG_DEBUG("SWD queue return value: %02x", retval);
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -15,7 +15,7 @@ buspirate_speed normal ;# or fast
|
|||
# voltage regulator Enabled = 1 Disabled = 0
|
||||
#buspirate_vreg 0
|
||||
|
||||
# pin mode normal or open-drain
|
||||
# pin mode normal or open-drain (jtag only)
|
||||
#buspirate_mode normal
|
||||
|
||||
# pullup state Enabled = 1 Disabled = 0
|
||||
|
|
|
|||
Loading…
Reference in New Issue