semihost server example program
Dependencies: SWD mbed USBLocalFileSystem BaseDAP USBDAP
LPCXpresso LPC11U68 | LPCXpresso LPC1549 | FRDM-KL46Z | EA LPC4088 QSB app-board | LPC1768 app-board | LPC810 | LPC1114FN28 | |
---|---|---|---|---|---|---|---|
server | server | server | server | server | client | client | |
SWDIO | D12 | D12 | D12 | p25 | p21 | p4(P0_2) | p12 |
SWCLK | D10 | D10 | D10 | p26 | p22 | p3(P0_3) | p3 |
nRESET *option | D6 | D6 | D6 | p34 | p30 | p1(P0_5) | p23 |
GND | GND | GND | GND | p1 | p1 | p7 | p22 |
3.3V | P3V3 | P3V3 | P3V3 | p44 | p40 | p6 | p21 |
flash write | SW2(P0_1) | SW3(P1_9) | SW1 | p14 joystick center | p14 joystick center |
client example:
Import programlpc810-semihost_helloworld
semihost client example program
Diff: Target2.cpp
- Revision:
- 0:27d35fa263b5
- Child:
- 1:eb30547ba84d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Target2.cpp Sun Sep 01 08:25:28 2013 +0000 @@ -0,0 +1,231 @@ +// Target2.cpp 2013/9/1 +#include "Target2.h" +#include "mydebug.h" + +#define DHCSR 0xe000edf0 +#define DCRSR (DHCSR+4) +#define DCRDR (DHCSR+8) + +Target2::Target2(PinName swdio, PinName swclk, PinName reset, Serial* usbpc) + : _swd(swdio, swclk, reset), _pc(usbpc) +{ + r0.setup(this, 0); + r1.setup(this, 1); + r2.setup(this, 2); + r3.setup(this, 3); + r4.setup(this, 4); + r5.setup(this, 5); + r6.setup(this, 6); + r7.setup(this, 7); + r8.setup(this, 8); + r9.setup(this, 9); + r10.setup(this, 10); + r11.setup(this, 11); + r12.setup(this, 12); + sp.setup(this, 13); + lr.setup(this, 14); + pc.setup(this, 15); + xpsr.setup(this, 16); +} + +bool Target2::setup() +{ + _swd.Setup(); + _swd.JTAG2SWD(); + + uint32_t data; + uint8_t ack = _swd.Transfer(DP_IDCODE, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + TEST_ASSERT(data == 0x0bb11477); + + Abort(); + + data = 0x0; + ack = _swd.Transfer(DP_SELECT, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + ack = _swd.Transfer(DP_RDBUFF, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + data = CSYSPWRUPREQ | CDBGPWRUPREQ; + TEST_ASSERT(data == 0x50000000); + ack = _swd.Transfer(DP_CTRL_STAT, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + ack = _swd.Transfer(DP_RDBUFF, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + ack = _swd.Transfer(DP_CTRL_STAT_R, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + TEST_ASSERT(data == 0xf0000040); + + data = CSYSPWRUPREQ | CDBGPWRUPREQ | 0x04000000; + TEST_ASSERT(data == 0x54000000); + ack = _swd.Transfer(DP_CTRL_STAT, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + ack = _swd.Transfer(DP_RDBUFF, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + data = CSYSPWRUPREQ | CDBGPWRUPREQ | MASKLANE; + TEST_ASSERT(data == 0x50000f00); + ack = _swd.Transfer(DP_CTRL_STAT, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + + ack = _swd.Transfer(DP_RDBUFF, &data); + TEST_ASSERT(ack == SWD_OK); + if (ack != SWD_OK) { + return false; + } + return true; +} + +void Target2::Reset() +{ + _swd.reset(); +} + +uint32_t Target2::readMemory(uint32_t addr) +{ + _setaddr(addr); + + uint32_t data; + uint8_t ack = _swd.Transfer(AP_DRW_R, &data); // dummy read + TEST_ASSERT(ack == SWD_OK); + + ack = _swd.Transfer(DP_RDBUFF, &data); + TEST_ASSERT(ack == SWD_OK); + return data; +} + +void Target2::readMemory(uint32_t addr, uint32_t* data, int count) +{ + if (count == 0) { + return; + } + + _setaddr(addr); + + uint8_t ack = _swd.Transfer(AP_DRW_R, NULL); // dummy read + TEST_ASSERT(ack == SWD_OK); + + for(int i = 0; i < count-1; i++) { + ack = _swd.Transfer(AP_DRW_R, data++); + TEST_ASSERT(ack == SWD_OK); + } + ack = _swd.Transfer(DP_RDBUFF, data); + TEST_ASSERT(ack == SWD_OK); +} + +void Target2::writeMemory(uint32_t addr, uint32_t data) +{ + writeMemory(addr, &data, 1); +} + +void Target2::writeMemory(uint32_t addr, uint32_t* data, int count) +{ + _setaddr(addr); + + while(count-- > 0) { + uint8_t ack = _swd.Transfer(AP_DRW_W, data); + TEST_ASSERT(ack == SWD_OK); + data++; + } +} + +void Target2::_setaddr(uint32_t addr) +{ + uint32_t ctl = CSW_VALUE|CSW_SIZE32; + TEST_ASSERT(ctl == 0x23000052); + uint8_t ack = _swd.Transfer(AP_CSW, &ctl); + TEST_ASSERT(ack == SWD_OK); + + ack = _swd.Transfer(DP_RDBUFF, NULL); + TEST_ASSERT(ack == SWD_OK); + + ack = _swd.Transfer(AP_TAR, &addr); + TEST_ASSERT(ack == SWD_OK); + + ack = _swd.Transfer(DP_RDBUFF, NULL); + TEST_ASSERT(ack == SWD_OK); +} + +void Target2::Abort() +{ + uint32_t data = 0x1e; + uint8_t ack = _swd.Transfer(DP_ABORT, &data); + TEST_ASSERT(ack == SWD_OK); +} + +int Target2::getStatus() +{ + return readMemory(DHCSR) & 6 ? TARGET_HALTED : TARGET_RUNNING; +} + +bool Target2::wait_status(int status, int timeout_ms) +{ + Timer t; + t.reset(); + t.start(); + while(t.read_ms() < timeout_ms) { + if (getStatus() == status) { + return true; + } + } + return false; +} + +void Target2::halt() +{ + writeMemory(DHCSR, 0xa05f0003); +} + +void Target2::resume() +{ + writeMemory(DHCSR, 0xa05f0001); +} + +uint32_t CoreReg::read() +{ + _target->writeMemory(DCRSR, _reg); + return _target->readMemory(DCRDR); +} + +void CoreReg::write(uint32_t value) +{ + _target->writeMemory(DCRDR, value); + _target->writeMemory(DCRSR, _reg|0x10000); +} + +void CoreReg::setup(Target2* target, uint8_t reg) +{ + _target = target; + _reg = reg; +}