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fix(mcpwm): fix division by zero error in prescale

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Closes https://github.com/espressif/esp-idf/issues/17665
This commit is contained in:
Chen Jichang
2025-09-30 12:21:26 +08:00
parent 508618432b
commit 0c95b8c267
1 changed files with 2 additions and 2 deletions
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4
components/esp_driver_mcpwm/src/mcpwm_com.c
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@@ -248,12 +248,12 @@ esp_err_t mcpwm_set_prescale(mcpwm_group_t *group, uint32_t expect_module_resolu
} }
module_prescale = fit_module_prescale; module_prescale = fit_module_prescale;
group_prescale = fit_group_prescale; group_prescale = fit_group_prescale;
ESP_RETURN_ON_FALSE(group_prescale > 0 && group_prescale <= MCPWM_LL_MAX_GROUP_PRESCALE, ESP_ERR_INVALID_STATE, TAG,
"set group prescale failed, group clock cannot match the resolution");
group_resolution_hz = periph_src_clk_hz / group_prescale; group_resolution_hz = periph_src_clk_hz / group_prescale;
} }
ESP_LOGD(TAG, "group (%d) calc prescale:%"PRIu32", module calc prescale:%"PRIu32"", group_id, group_prescale, module_prescale); ESP_LOGD(TAG, "group (%d) calc prescale:%"PRIu32", module calc prescale:%"PRIu32"", group_id, group_prescale, module_prescale);
ESP_RETURN_ON_FALSE(group_prescale > 0 && group_prescale <= MCPWM_LL_MAX_GROUP_PRESCALE, ESP_ERR_INVALID_STATE, TAG,
"set group prescale failed, group clock cannot match the resolution");
// check if we need to update the group prescale, group prescale is shared by all mcpwm modules // check if we need to update the group prescale, group prescale is shared by all mcpwm modules
bool prescale_conflict = false; bool prescale_conflict = false;