2 * QTest testcase for Microbit board using the Nordic Semiconductor nRF51 SoC.
5 * Reference Manual: http://infocenter.nordicsemi.com/pdf/nRF51_RM_v3.0.pdf
6 * Product Spec: http://infocenter.nordicsemi.com/pdf/nRF51822_PS_v3.1.pdf
8 * Microbit Board: http://microbit.org/
12 * This code is licensed under the GPL version 2 or later. See
13 * the COPYING file in the top-level directory.
17 #include "qemu/osdep.h"
18 #include "exec/hwaddr.h"
21 #include "hw/arm/nrf51.h"
22 #include "hw/char/nrf51_uart.h"
23 #include "hw/gpio/nrf51_gpio.h"
24 #include "hw/nvram/nrf51_nvm.h"
25 #include "hw/timer/nrf51_timer.h"
26 #include "hw/i2c/microbit_i2c.h"
28 static bool uart_wait_for_event(QTestState *qts, uint32_t event_addr)
30 time_t now, start = time(NULL);
33 if (qtest_readl(qts, event_addr) == 1) {
34 qtest_writel(qts, event_addr, 0x00);
38 /* Wait at most 10 minutes */
40 if (now - start > 600) {
49 static void uart_rw_to_rxd(QTestState *qts, int sock_fd, const char *in,
52 int i, in_len = strlen(in);
54 g_assert_true(write(sock_fd, in, in_len) == in_len);
55 for (i = 0; i < in_len; i++) {
56 g_assert_true(uart_wait_for_event(qts, NRF51_UART_BASE +
58 out[i] = qtest_readl(qts, NRF51_UART_BASE + A_UART_RXD);
63 static void uart_w_to_txd(QTestState *qts, const char *in)
65 int i, in_len = strlen(in);
67 for (i = 0; i < in_len; i++) {
68 qtest_writel(qts, NRF51_UART_BASE + A_UART_TXD, in[i]);
69 g_assert_true(uart_wait_for_event(qts, NRF51_UART_BASE +
74 static void test_nrf51_uart(void)
78 QTestState *qts = qtest_init_with_serial("-M microbit", &sock_fd);
80 g_assert_true(write(sock_fd, "c", 1) == 1);
81 g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_RXD), ==, 0x00);
83 qtest_writel(qts, NRF51_UART_BASE + A_UART_ENABLE, 0x04);
84 qtest_writel(qts, NRF51_UART_BASE + A_UART_STARTRX, 0x01);
86 g_assert_true(uart_wait_for_event(qts, NRF51_UART_BASE + A_UART_RXDRDY));
87 qtest_writel(qts, NRF51_UART_BASE + A_UART_RXDRDY, 0x00);
88 g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_RXD), ==, 'c');
90 qtest_writel(qts, NRF51_UART_BASE + A_UART_INTENSET, 0x04);
91 g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_INTEN), ==, 0x04);
92 qtest_writel(qts, NRF51_UART_BASE + A_UART_INTENCLR, 0x04);
93 g_assert_cmphex(qtest_readl(qts, NRF51_UART_BASE + A_UART_INTEN), ==, 0x00);
95 uart_rw_to_rxd(qts, sock_fd, "hello", s);
96 g_assert_true(memcmp(s, "hello", 5) == 0);
98 qtest_writel(qts, NRF51_UART_BASE + A_UART_STARTTX, 0x01);
99 uart_w_to_txd(qts, "d");
100 g_assert_true(read(sock_fd, s, 10) == 1);
101 g_assert_cmphex(s[0], ==, 'd');
103 qtest_writel(qts, NRF51_UART_BASE + A_UART_SUSPEND, 0x01);
104 qtest_writel(qts, NRF51_UART_BASE + A_UART_TXD, 'h');
105 qtest_writel(qts, NRF51_UART_BASE + A_UART_STARTTX, 0x01);
106 uart_w_to_txd(qts, "world");
107 g_assert_true(read(sock_fd, s, 10) == 5);
108 g_assert_true(memcmp(s, "world", 5) == 0);
115 /* Read a byte from I2C device at @addr from register @reg */
116 static uint32_t i2c_read_byte(QTestState *qts, uint32_t addr, uint32_t reg)
120 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_REG_ADDRESS, addr);
121 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_TASK_STARTTX, 1);
122 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_REG_TXD, reg);
123 val = qtest_readl(qts, NRF51_TWI_BASE + NRF51_TWI_EVENT_TXDSENT);
124 g_assert_cmpuint(val, ==, 1);
125 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_TASK_STOP, 1);
127 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_TASK_STARTRX, 1);
128 val = qtest_readl(qts, NRF51_TWI_BASE + NRF51_TWI_EVENT_RXDREADY);
129 g_assert_cmpuint(val, ==, 1);
130 val = qtest_readl(qts, NRF51_TWI_BASE + NRF51_TWI_REG_RXD);
131 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_TASK_STOP, 1);
136 static void test_microbit_i2c(void)
139 QTestState *qts = qtest_init("-M microbit");
141 /* We don't program pins/irqs but at least enable the device */
142 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_REG_ENABLE, 5);
144 /* MMA8653 magnetometer detection */
145 val = i2c_read_byte(qts, 0x3A, 0x0D);
146 g_assert_cmpuint(val, ==, 0x5A);
148 val = i2c_read_byte(qts, 0x3A, 0x0D);
149 g_assert_cmpuint(val, ==, 0x5A);
151 /* LSM303 accelerometer detection */
152 val = i2c_read_byte(qts, 0x3C, 0x4F);
153 g_assert_cmpuint(val, ==, 0x40);
155 qtest_writel(qts, NRF51_TWI_BASE + NRF51_TWI_REG_ENABLE, 0);
160 #define FLASH_SIZE (256 * NRF51_PAGE_SIZE)
162 static void fill_and_erase(QTestState *qts, hwaddr base, hwaddr size,
163 uint32_t address_reg)
168 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x02);
169 qtest_writel(qts, NRF51_NVMC_BASE + address_reg, base);
170 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
173 for (i = 0; i < size / 4; i++) {
174 g_assert_cmpuint(qtest_readl(qts, base + i * 4), ==, 0xFFFFFFFF);
178 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x01);
179 for (i = 0; i < size / 4; i++) {
180 qtest_writel(qts, base + i * 4, i);
181 g_assert_cmpuint(qtest_readl(qts, base + i * 4), ==, i);
183 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
186 static void test_nrf51_nvmc(void)
190 QTestState *qts = qtest_init("-M microbit");
192 /* Test always ready */
193 value = qtest_readl(qts, NRF51_NVMC_BASE + NRF51_NVMC_READY);
194 g_assert_cmpuint(value & 0x01, ==, 0x01);
196 /* Test write-read config register */
197 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x03);
198 g_assert_cmpuint(qtest_readl(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG),
200 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
201 g_assert_cmpuint(qtest_readl(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG),
205 fill_and_erase(qts, NRF51_FLASH_BASE, NRF51_PAGE_SIZE,
206 NRF51_NVMC_ERASEPCR0);
207 fill_and_erase(qts, NRF51_FLASH_BASE + NRF51_PAGE_SIZE,
208 NRF51_PAGE_SIZE, NRF51_NVMC_ERASEPCR0);
211 fill_and_erase(qts, NRF51_FLASH_BASE, NRF51_PAGE_SIZE,
212 NRF51_NVMC_ERASEPCR1);
213 fill_and_erase(qts, NRF51_FLASH_BASE + NRF51_PAGE_SIZE,
214 NRF51_PAGE_SIZE, NRF51_NVMC_ERASEPCR1);
217 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x02);
218 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_ERASEALL, 0x01);
219 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
221 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x01);
222 for (i = 0; i < FLASH_SIZE / 4; i++) {
223 qtest_writel(qts, NRF51_FLASH_BASE + i * 4, i);
224 g_assert_cmpuint(qtest_readl(qts, NRF51_FLASH_BASE + i * 4), ==, i);
226 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
228 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x02);
229 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_ERASEALL, 0x01);
230 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
232 for (i = 0; i < FLASH_SIZE / 4; i++) {
233 g_assert_cmpuint(qtest_readl(qts, NRF51_FLASH_BASE + i * 4),
238 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x02);
239 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_ERASEUICR, 0x01);
240 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
242 for (i = 0; i < NRF51_UICR_SIZE / 4; i++) {
243 g_assert_cmpuint(qtest_readl(qts, NRF51_UICR_BASE + i * 4),
247 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x01);
248 for (i = 0; i < NRF51_UICR_SIZE / 4; i++) {
249 qtest_writel(qts, NRF51_UICR_BASE + i * 4, i);
250 g_assert_cmpuint(qtest_readl(qts, NRF51_UICR_BASE + i * 4), ==, i);
252 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
254 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x02);
255 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_ERASEUICR, 0x01);
256 qtest_writel(qts, NRF51_NVMC_BASE + NRF51_NVMC_CONFIG, 0x00);
258 for (i = 0; i < NRF51_UICR_SIZE / 4; i++) {
259 g_assert_cmpuint(qtest_readl(qts, NRF51_UICR_BASE + i * 4),
266 static void test_nrf51_gpio(void)
269 uint32_t actual, expected;
274 } const reset_state[] = {
275 {NRF51_GPIO_REG_OUT, 0x00000000}, {NRF51_GPIO_REG_OUTSET, 0x00000000},
276 {NRF51_GPIO_REG_OUTCLR, 0x00000000}, {NRF51_GPIO_REG_IN, 0x00000000},
277 {NRF51_GPIO_REG_DIR, 0x00000000}, {NRF51_GPIO_REG_DIRSET, 0x00000000},
278 {NRF51_GPIO_REG_DIRCLR, 0x00000000}
281 QTestState *qts = qtest_init("-M microbit");
283 /* Check reset state */
284 for (i = 0; i < ARRAY_SIZE(reset_state); i++) {
285 expected = reset_state[i].expected;
286 actual = qtest_readl(qts, NRF51_GPIO_BASE + reset_state[i].addr);
287 g_assert_cmpuint(actual, ==, expected);
290 for (i = 0; i < NRF51_GPIO_PINS; i++) {
291 expected = 0x00000002;
292 actual = qtest_readl(qts, NRF51_GPIO_BASE +
293 NRF51_GPIO_REG_CNF_START + i * 4);
294 g_assert_cmpuint(actual, ==, expected);
297 /* Check dir bit consistency between dir and cnf */
298 /* Check set via DIRSET */
299 expected = 0x80000001;
300 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIRSET, expected);
301 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR);
302 g_assert_cmpuint(actual, ==, expected);
303 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START)
305 g_assert_cmpuint(actual, ==, 0x01);
306 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_END) & 0x01;
307 g_assert_cmpuint(actual, ==, 0x01);
309 /* Check clear via DIRCLR */
310 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIRCLR, 0x80000001);
311 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR);
312 g_assert_cmpuint(actual, ==, 0x00000000);
313 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START)
315 g_assert_cmpuint(actual, ==, 0x00);
316 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_END) & 0x01;
317 g_assert_cmpuint(actual, ==, 0x00);
319 /* Check set via DIR */
320 expected = 0x80000001;
321 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR, expected);
322 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR);
323 g_assert_cmpuint(actual, ==, expected);
324 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START)
326 g_assert_cmpuint(actual, ==, 0x01);
327 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_END) & 0x01;
328 g_assert_cmpuint(actual, ==, 0x01);
331 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR, 0x00000000);
333 /* Check Input propagates */
334 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x00);
335 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
336 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
337 g_assert_cmpuint(actual, ==, 0x00);
338 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, 1);
339 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
340 g_assert_cmpuint(actual, ==, 0x01);
341 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, -1);
342 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
343 g_assert_cmpuint(actual, ==, 0x01);
344 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x02);
346 /* Check pull-up working */
347 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
348 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0000);
349 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
350 g_assert_cmpuint(actual, ==, 0x00);
351 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b1110);
352 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
353 g_assert_cmpuint(actual, ==, 0x01);
354 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x02);
356 /* Check pull-down working */
357 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, 1);
358 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0000);
359 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
360 g_assert_cmpuint(actual, ==, 0x01);
361 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0110);
362 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
363 g_assert_cmpuint(actual, ==, 0x00);
364 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x02);
365 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, -1);
367 /* Check Output propagates */
368 qtest_irq_intercept_out(qts, "/machine/nrf51");
369 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0011);
370 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTSET, 0x01);
371 g_assert_true(qtest_get_irq(qts, 0));
372 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTCLR, 0x01);
373 g_assert_false(qtest_get_irq(qts, 0));
375 /* Check self-stimulation */
376 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b01);
377 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTSET, 0x01);
378 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
379 g_assert_cmpuint(actual, ==, 0x01);
381 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTCLR, 0x01);
382 actual = qtest_readl(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
383 g_assert_cmpuint(actual, ==, 0x00);
386 * Check short-circuit - generates an guest_error which must be checked
387 * manually as long as qtest can not scan qemu_log messages
389 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b01);
390 qtest_writel(qts, NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTSET, 0x01);
391 qtest_set_irq_in(qts, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
396 static void timer_task(QTestState *qts, hwaddr task)
398 qtest_writel(qts, NRF51_TIMER_BASE + task, NRF51_TRIGGER_TASK);
401 static void timer_clear_event(QTestState *qts, hwaddr event)
403 qtest_writel(qts, NRF51_TIMER_BASE + event, NRF51_EVENT_CLEAR);
406 static void timer_set_bitmode(QTestState *qts, uint8_t mode)
408 qtest_writel(qts, NRF51_TIMER_BASE + NRF51_TIMER_REG_BITMODE, mode);
411 static void timer_set_prescaler(QTestState *qts, uint8_t prescaler)
413 qtest_writel(qts, NRF51_TIMER_BASE + NRF51_TIMER_REG_PRESCALER, prescaler);
416 static void timer_set_cc(QTestState *qts, size_t idx, uint32_t value)
418 qtest_writel(qts, NRF51_TIMER_BASE + NRF51_TIMER_REG_CC0 + idx * 4, value);
421 static void timer_assert_events(QTestState *qts, uint32_t ev0, uint32_t ev1,
422 uint32_t ev2, uint32_t ev3)
424 g_assert(qtest_readl(qts, NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_0)
426 g_assert(qtest_readl(qts, NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_1)
428 g_assert(qtest_readl(qts, NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_2)
430 g_assert(qtest_readl(qts, NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_3)
434 static void test_nrf51_timer(void)
436 uint32_t steps_to_overflow = 408;
437 QTestState *qts = qtest_init("-M microbit");
440 timer_task(qts, NRF51_TIMER_TASK_STOP);
441 timer_task(qts, NRF51_TIMER_TASK_CLEAR);
443 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_0);
444 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_1);
445 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_2);
446 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_3);
448 timer_set_bitmode(qts, NRF51_TIMER_WIDTH_16); /* 16 MHz Timer */
449 timer_set_prescaler(qts, 0);
450 /* Swept over in first step */
451 timer_set_cc(qts, 0, 2);
452 /* Barely miss on first step */
453 timer_set_cc(qts, 1, 162);
454 /* Spot on on third step */
455 timer_set_cc(qts, 2, 480);
457 timer_assert_events(qts, 0, 0, 0, 0);
459 timer_task(qts, NRF51_TIMER_TASK_START);
460 qtest_clock_step(qts, 10000);
461 timer_assert_events(qts, 1, 0, 0, 0);
463 /* Swept over on first overflow */
464 timer_set_cc(qts, 3, 114);
466 qtest_clock_step(qts, 10000);
467 timer_assert_events(qts, 1, 1, 0, 0);
469 qtest_clock_step(qts, 10000);
470 timer_assert_events(qts, 1, 1, 1, 0);
472 /* Wrap time until internal counter overflows */
473 while (steps_to_overflow--) {
474 timer_assert_events(qts, 1, 1, 1, 0);
475 qtest_clock_step(qts, 10000);
478 timer_assert_events(qts, 1, 1, 1, 1);
480 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_0);
481 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_1);
482 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_2);
483 timer_clear_event(qts, NRF51_TIMER_EVENT_COMPARE_3);
484 timer_assert_events(qts, 0, 0, 0, 0);
486 timer_task(qts, NRF51_TIMER_TASK_STOP);
488 /* Test Proposal: Stop/Shutdown */
489 /* Test Proposal: Shortcut Compare -> Clear */
490 /* Test Proposal: Shortcut Compare -> Stop */
491 /* Test Proposal: Counter Mode */
496 int main(int argc, char **argv)
498 g_test_init(&argc, &argv, NULL);
500 qtest_add_func("/microbit/nrf51/uart", test_nrf51_uart);
501 qtest_add_func("/microbit/nrf51/gpio", test_nrf51_gpio);
502 qtest_add_func("/microbit/nrf51/nvmc", test_nrf51_nvmc);
503 qtest_add_func("/microbit/nrf51/timer", test_nrf51_timer);
504 qtest_add_func("/microbit/microbit/i2c", test_microbit_i2c);