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steami: Fix READ_SECTOR command argument length and address. #1

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Merged
nedseb merged 4 commits into from
Mar 16, 2026
Merged

steami: Fix READ_SECTOR command argument length and address. #1

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6955e0c
steami: Fix READ_SECTOR command argument length and address.
nedseb Mar 16, 2026
22a283d
fix: address PR review comments
nedseb Mar 16, 2026
633cc4d
steami: Fix WRITE_DATA page boundary corruption.
nedseb Mar 16, 2026
e876fc8
fix: restrict READ_SECTOR to file area only
nedseb Mar 16, 2026
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15 changes: 11 additions & 4 deletions source/board/steami/steami32.c
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Original file line number Diff line number Diff line change
Expand Up @@ -371,12 +371,19 @@ void process_task()

case TASK_READ_SECTOR:{

if( task_rx_len == 1 && steami_flash_read_sector(task_rx[0], buffer_sector) ){
steami_i2c_set_tx_data(buffer_sector, 256);
if( task_rx_len == 2 ){
uint16_t sector = ((uint16_t)task_rx[0] << 8) | task_rx[1];
if( steami_flash_read_sector(sector, buffer_sector) ){
steami_i2c_set_tx_data(buffer_sector, 256);
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}
else{
error_status_set_last_command_fail(&status_error);
steami_uart_write_string("ERROR Unable to read sector (bad sector parameter ?)\n");
}
}
else{
error_status_set_last_command_fail(&status_error);
steami_uart_write_string("ERROR Unable to read sector (bad sector parameter ?)\n");
error_status_bad_parameter(&status_error);
steami_uart_write_string("ERROR READ_SECTOR expects 2 bytes (sector number)\n");
}

current_task = TASK_WAIT_FLASH_BUSY;
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2 changes: 1 addition & 1 deletion source/board/steami/steami_flash.c
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Expand Up @@ -194,7 +194,7 @@ bool steami_flash_read_sector(uint32_t sector_number, uint8_t* data){
return false;
}

return w25q64_read_data(data, 0, 256);
return w25q64_read_data(data, sector_number * STEAMI_FLASH_SECTOR, STEAMI_FLASH_SECTOR);
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}

uint16_t steami_flash_read_file(uint8_t* data, uint16_t data_len, uint32_t offset){
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