# script for stm32f4x family # # stm32 devices support both JTAG and SWD transports. # source [find target/swj-dp.tcl] source [find mem_helper.tcl] if { [info exists CHIPNAME] } { set _CHIPNAME $CHIPNAME } else { set _CHIPNAME stm32f4x } set _ENDIAN little # Work-area is a space in RAM used for flash programming # By default use 32kB (Available RAM in smallest device STM32F410) if { [info exists WORKAREASIZE] } { set _WORKAREASIZE $WORKAREASIZE } else { set _WORKAREASIZE 0x8000 } #jtag scan chain if { [info exists CPUTAPID] } { set _CPUTAPID $CPUTAPID } else { if { [using_jtag] } { # See STM Document RM0090 # Section 38.6.3 - corresponds to Cortex-M4 r0p1 set _CPUTAPID 0x4ba00477 } { set _CPUTAPID 0x2ba01477 } } swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu if {[using_jtag]} { jtag newtap $_CHIPNAME bs -irlen 5 } set _TARGETNAME $_CHIPNAME.cpu target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0 set _FLASHNAME $_CHIPNAME.flash flash bank $_FLASHNAME stm32f2x 0 0 0 0 $_TARGETNAME # JTAG speed should be <= F_CPU/6. F_CPU after reset is 16MHz, so use F_JTAG = 2MHz # # Since we may be running of an RC oscilator, we crank down the speed a # bit more to be on the safe side. Perhaps superstition, but if are # running off a crystal, we can run closer to the limit. Note # that there can be a pretty wide band where things are more or less stable. adapter_khz 2000 adapter_nsrst_delay 100 if {[using_jtag]} { jtag_ntrst_delay 100 } reset_config srst_nogate if {![using_hla]} { # if srst is not fitted use SYSRESETREQ to # perform a soft reset cortex_m reset_config sysresetreq } $_TARGETNAME configure -event examine-end { # Enable debug during low power modes (uses more power) # DBGMCU_CR |= DBG_STANDBY | DBG_STOP | DBG_SLEEP mmw 0xE0042004 0x00000007 0 # Stop watchdog counters during halt # DBGMCU_APB1_FZ |= DBG_IWDG_STOP | DBG_WWDG_STOP mmw 0xE0042008 0x00001800 0 } $_TARGETNAME configure -event trace-config { # Set TRACE_IOEN; TRACE_MODE is set to async; when using sync # change this value accordingly to configure trace pins # assignment mmw 0xE0042004 0x00000020 0 } $_TARGETNAME configure -event reset-init { # Configure PLL to boost clock to HSI x 4 (64 MHz) mww 0x40023804 0x08012008 ;# RCC_PLLCFGR 16 Mhz /8 (M) * 128 (N) /4(P) mww 0x40023C00 0x00000102 ;# FLASH_ACR = PRFTBE | 2(Latency) mmw 0x40023800 0x01000000 0 ;# RCC_CR |= PLLON sleep 10 ;# Wait for PLL to lock mmw 0x40023808 0x00001000 0 ;# RCC_CFGR |= RCC_CFGR_PPRE1_DIV2 mmw 0x40023808 0x00000002 0 ;# RCC_CFGR |= RCC_CFGR_SW_PLL # Boost JTAG frequency adapter_khz 8000 } $_TARGETNAME configure -event reset-start { # Reduce speed since CPU speed will slow down to 16MHz with the reset adapter_khz 2000 }