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i2c: Add work-around to make i2c scan work #73

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Merged
kwd-doodling merged 1 commit into from
Feb 3, 2026
Merged

i2c: Add work-around to make i2c scan work #73

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8 changes: 6 additions & 2 deletions bsp_sedi/drivers/i2c/sedi_i2c_dw_apb_200a.c
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Original file line number Diff line number Diff line change
Expand Up @@ -878,7 +878,6 @@ int32_t sedi_i2c_master_write_async(IN sedi_i2c_t i2c_device, IN uint32_t addr,
DBG_CHECK(i2c_device < SEDI_I2C_NUM, SEDI_DRIVER_ERROR_PARAMETER);
DBG_CHECK(0 != (addr & SEDI_RBFM(I2C, TAR, IC_TAR)), SEDI_DRIVER_ERROR_PARAMETER);
DBG_CHECK(NULL != data, SEDI_DRIVER_ERROR_PARAMETER);
DBG_CHECK(0 != num, SEDI_DRIVER_ERROR_PARAMETER);

struct i2c_context *context = &contexts[i2c_device];

Expand Down Expand Up @@ -909,7 +908,12 @@ int32_t sedi_i2c_master_write_async(IN sedi_i2c_t i2c_device, IN uint32_t addr,
context->status.event = SEDI_I2C_EVENT_TRANSFER_NONE;

context->buf = (uint8_t *)data;
context->buf_size = num;
if ((num == 0) && (data != NULL)) {
/* Workaround for I2C scanner as HW does not support 0 byte transfers. */
context->buf_size = 1;
} else {
context->buf_size = num;
}
context->rx_cmd_index = 0;
context->buf_index = 0;
context->pending = pending;
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