removed global receive buffer to not loose nonces

src/drivers/nerd-nos/bm1397.cpp

@@ -48,9 +48,6 @@ typedef struct __attribute__((__packed__))
 
 static const char *TAG = "bm1397Module";
 
-static uint8_t asic_response_buffer[CHUNK_SIZE];
-static task_result result;
-
 uint32_t increment_bitmask(const uint32_t value, const uint32_t mask);
 
 /// @brief
@@ -203,10 +200,11 @@ static uint8_t _send_init(uint64_t frequency, uint16_t asic_count)
 {
     // send the init command
     _send_read_address();
+    uint8_t buf[11] = {0};
 
     int chip_counter = 0;
     while (true) {
-        int received = SERIAL_rx(asic_response_buffer, 11, 1000);
+        int received = SERIAL_rx(buf, 11, 1000);
         if (received > 0) {
             //ESP_LOG_BUFFER_HEX(TAG, asic_response_buffer, received);
             chip_counter++;
@@ -271,8 +269,6 @@ uint8_t BM1397_init(uint64_t frequency, uint16_t asic_count)
 {
     Serial.println("Initializing BM1397");
 
-    memset(asic_response_buffer, 0, sizeof(asic_response_buffer));
-
     gpio_set_direction(NERD_NOS_GPIO_PEN, GPIO_MODE_OUTPUT);
     gpio_set_level(NERD_NOS_GPIO_PEN, 1);
 
@@ -361,46 +357,47 @@ void BM1397_send_work(bm_job_t *next_bm_job, uint8_t job_id)
     _send_BM1397((TYPE_JOB | GROUP_SINGLE | CMD_WRITE), (uint8_t*) &job, sizeof(job_packet_t), BM1397_DEBUG_WORK);
 }
 
-asic_result *BM1397_receive_work(uint16_t timeout)
+bool BM1397_receive_work(uint16_t timeout, asic_result *result)
 {
+    uint8_t *rcv_buf = (uint8_t*) result;
 
     // wait for a response, wait time is pretty arbitrary
-    int received = SERIAL_rx(asic_response_buffer, 9, timeout);
+    int received = SERIAL_rx(rcv_buf, 9, timeout);
 
     if (received < 0)
     {
         Serial.println("Error in serial RX");
-        return NULL;
+        return false;
     }
     else if (received == 0)
     {
         // Didn't find a solution, restart and try again
-        return NULL;
+        return false;
     }
 
-    if (received != 9 || asic_response_buffer[0] != 0xAA || asic_response_buffer[1] != 0x55)
+    if (received != 9 || rcv_buf[0] != 0xAA || rcv_buf[1] != 0x55)
     {
         Serial.println("Serial RX invalid. Resetting receive buffer ...");
         //ESP_LOG_BUFFER_HEX(TAG, asic_response_buffer, received);
         SERIAL_clear_buffer();
-        return NULL;
+        return false;
+    }
+    return true;
+
 }
 
-    return (asic_result *)asic_response_buffer;
-}
-
-task_result *BM1397_proccess_work(uint32_t version, uint16_t timeout)
+bool BM1397_proccess_work(uint32_t version, uint16_t timeout, task_result *result)
 {
-    asic_result *asic_result = BM1397_receive_work(timeout);
+    asic_result asic_result;
 
-    if (asic_result == NULL)
+    if (!BM1397_receive_work(timeout, &asic_result))
     {
         ESP_LOGI(TAG, "return null");
-        return NULL;
+        return false;
     }
 
-    uint8_t rx_job_id = (asic_result->job_id & 0xfc) >> 2;
-    uint8_t rx_midstate_index = asic_result->job_id & 0x03;
+    uint8_t rx_job_id = (asic_result.job_id & 0xfc) >> 2;
+    uint8_t rx_midstate_index = asic_result.job_id & 0x03;
 
     uint32_t rolled_version = version;
     for (int i = 0; i < rx_midstate_index; i++)
@@ -408,10 +405,10 @@ task_result *BM1397_proccess_work(uint32_t version, uint16_t timeout)
         rolled_version = increment_bitmask(rolled_version, 0x1fffe000);
     }
 
-    result.job_id = rx_job_id;
-    result.nonce = asic_result->nonce;
-    result.rolled_version = rolled_version;
+    result->job_id = rx_job_id;
+    result->nonce = asic_result.nonce;
+    result->rolled_version = rolled_version;
 
-    return &result;
+    return true;
 }
 

src/drivers/nerd-nos/bm1397.h

@@ -17,5 +17,5 @@ void BM1397_set_job_difficulty_mask(int);
 int BM1397_set_max_baud(void);
 int BM1397_set_default_baud(void);
 void BM1397_send_hash_frequency(float frequency);
-task_result *BM1397_proccess_work(uint32_t version, uint16_t timeout);
+bool BM1397_proccess_work(uint32_t version, uint16_t timeout, task_result *result);
 

src/drivers/nerd-nos/mining.cpp

@@ -160,8 +160,8 @@ void nerdnos_send_work(bm_job_t *next_bm_job, uint8_t job_id) {
     BM1397_send_work(next_bm_job, job_id);
 }
 
-task_result *nerdnos_proccess_work(uint32_t version, uint16_t timeout) {
-    return BM1397_proccess_work(version, timeout);
+bool nerdnos_proccess_work(uint32_t version, uint16_t timeout, task_result *result) {
+    return BM1397_proccess_work(version, timeout, result);
 }
 
 void nerdnos_free_bm_job(bm_job_t *job) {

src/drivers/nerd-nos/mining.h

@@ -16,7 +16,7 @@ void nerdnos_create_job(mining_subscribe *mWorker, mining_job *job, bm_job_t *ne
 void nerdnos_send_work(bm_job_t *next_bm_job, uint8_t job_id);
 
 // receive and process responses
-task_result *nerdnos_proccess_work(uint32_t version, uint16_t timeout);
+bool nerdnos_proccess_work(uint32_t version, uint16_t timeout, task_result *result);
 
 // test difficulty
 double nerdnos_test_nonce_value(const bm_job_t *job, const uint32_t nonce, const uint32_t rolled_version, uint8_t hash_result[32]);

src/drivers/nerd-nos/serial.cpp

@@ -51,8 +51,8 @@ int SERIAL_send(uint8_t *data, int len, bool debug)
     return uart_write_bytes(UART_NUM_1, (const char *)data, len);
 }
 
-int SERIAL_check_for_data() {
-    int length;
+size_t SERIAL_check_for_data() {
+    size_t length;
     uart_get_buffered_data_len(UART_NUM_1, (size_t*)&length);
     return length;
 }
@@ -65,7 +65,9 @@ int SERIAL_check_for_data() {
 int16_t SERIAL_rx(uint8_t *buf, uint16_t size, uint16_t timeout_ms)
 {
     // don't return incomplete data
-    if (SERIAL_check_for_data() < size) {
+    size_t available = SERIAL_check_for_data();
+    if (available && available < size) {
+        Serial.printf("not returning parts of data ... %d vs %d\n", (int) available, (int) size);
         return 0;
     }
 

src/mining_nerdnos.cpp

@@ -172,15 +172,11 @@ void runASIC(void * task_id) {
       // send the job and
       nerdnos_send_work(&asic_jobs[asic_job_id], asic_job_id);
 
-      // the pointer returned is the RS232 receive buffer :shushing-face:
-      // but we only have a single thread so it should be okay
-      // process all results if we have more than one
-      // this is okay because serial uses a buffer and (most likely^^) DMA
-      task_result *result = NULL;
-      while ((result = nerdnos_proccess_work(version, 1)) != NULL) {
+      task_result result = {0};
+      while (nerdnos_proccess_work(version, 1, &result)) {
         // check if the ID is in the valid range and the slot is not empty
-        if (result->job_id >= ASIC_JOB_COUNT || !asic_jobs[result->job_id].ntime) {
-          Serial.printf("Invalid job ID or no job found for ID %02x\n", result->job_id);
+        if (result.job_id >= ASIC_JOB_COUNT || !asic_jobs[result.job_id].ntime) {
+          Serial.printf("Invalid job ID or no job found for ID %02x\n", result.job_id);
           continue;
         }
 
@@ -188,9 +184,9 @@ void runASIC(void * task_id) {
 
         // check the nonce difficulty
         double diff_hash = nerdnos_test_nonce_value(
-            &asic_jobs[result->job_id],
-            result->nonce,
-            result->rolled_version,
+            &asic_jobs[result.job_id],
+            result.nonce,
+            result.rolled_version,
             hash);
 
         // update best diff
@@ -199,14 +195,14 @@ void runASIC(void * task_id) {
         }
 
         // calculate the hashrate
-        if (diff_hash >= asic_jobs[result->job_id].pool_diff) {
-          calculate_hashrate(&history, asic_jobs[result->job_id].pool_diff);
+        if (diff_hash >= asic_jobs[result.job_id].pool_diff) {
+          calculate_hashrate(&history, asic_jobs[result.job_id].pool_diff);
           Serial.printf("avg hashrate: %.2fGH/s (history spans %.2fs, %d shares)\n", history.avg_gh, history.duration, history.shares);
         }
 
         if(diff_hash > mMiner.poolDifficulty)
         {
-          tx_mining_submit_asic(client, mWorker, &asic_jobs[result->job_id], result);
+          tx_mining_submit_asic(client, mWorker, &asic_jobs[result.job_id], &result);
           Serial.println("valid share!");
           Serial.printf("   - Current diff share: %.3f\n", diff_hash);
           Serial.printf("   - Current pool diff : %.3f\n", mMiner.poolDifficulty);