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Diffstat (limited to 'src/target/arm_adi_v5.h')
| -rw-r--r-- | src/target/arm_adi_v5.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/target/arm_adi_v5.h b/src/target/arm_adi_v5.h index 9f0dea91..131e9d96 100644 --- a/src/target/arm_adi_v5.h +++ b/src/target/arm_adi_v5.h @@ -401,6 +401,35 @@ static inline int dap_dp_read_atomic(struct adiv5_dap *dap, unsigned reg, return dap_run(dap); } +static inline int dap_dp_poll_register(struct adiv5_dap *dap, unsigned reg, + uint32_t mask, uint32_t value, int timeout) +{ + assert(timeout > 0); + assert((value & mask) == value); + + int ret; + uint32_t regval; + LOG_DEBUG("DAP: poll %x, mask 0x08%" PRIx32 ", value 0x%08" PRIx32, + reg, mask, value); + do { + ret = dap_dp_read_atomic(dap, reg, ®val); + if (ret != ERROR_OK) + return ret; + + if ((regval & mask) == value) + break; + + alive_sleep(10); + } while (--timeout); + + if (!timeout) { + LOG_DEBUG("DAP: poll %x timeout", reg); + return ERROR_FAIL; + } else { + return ERROR_OK; + } +} + /** Accessor for currently selected DAP-AP number (0..255) */ static inline uint8_t dap_ap_get_select(struct adiv5_dap *swjdp) { |