84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
//
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// Created by CFIF on 13.11.22.
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//
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#include "SerialPortVirt.h"
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void SerialPortVirt_Init(tSerialPortVirt *env, uint16_t queueBufferLen) {
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env->queue = osMessageQueueNew(queueBufferLen, 1, NULL);
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}
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static uint16_t vSerialPortReceiveQueue(uint8_t *data, uint16_t size, uint32_t timeout, osMessageQueueId_t queueId) {
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uint16_t received = 0;
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uint32_t endMs = SystemGetMs() + timeout;
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uint32_t leftMs;
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uint16_t granted = 0;
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if (!timeout) {
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granted = osMessageQueueGetCount(queueId);
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}
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while (size && (((timeout == SystemWaitForever) || (endMs > SystemGetMs())) || (received < granted))) {
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leftMs = endMs - SystemGetMs();
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if (osMessageQueueGet(queueId, data, NULL, leftMs) == osOK) {
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--size;
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++received;
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++data;
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} else if (timeout == 0) {
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return received;
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}
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}
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return received;
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}
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static uint16_t vSerialPortReceive(tSerialPortVirt *env, uint8_t *data, uint16_t size, uint32_t timeout) {
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return vSerialPortReceiveQueue(data, size, timeout, env->queue);
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}
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static uint16_t vSerialPortTransmitQueue(uint8_t *data, uint16_t size, uint32_t timeout, osMessageQueueId_t queueId) {
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uint16_t sent = 0;
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uint32_t endMs = SystemGetMs() + timeout;
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uint32_t leftMs;
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uint16_t granted = 0;
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if (!timeout) {
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granted = osMessageQueueGetSpace(queueId);
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}
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while (size && (((timeout == SystemWaitForever) || (endMs > SystemGetMs())) || (sent < granted))) {
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if (timeout == SystemWaitForever) {
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leftMs = SystemWaitForever;
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} else {
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leftMs = endMs - SystemGetMs();
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}
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if (osMessageQueuePut(queueId, data, 0x00, leftMs) == osOK) {
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--size;
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++sent;
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++data;
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} else if (timeout == 0) {
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return sent;
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}
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}
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return sent;
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}
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static uint16_t vSerialPortTransmit(tSerialPortVirt *env, uint8_t *data, uint16_t size, uint32_t timeout) {
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return vSerialPortTransmitQueue(data, size, timeout, env->queue);
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}
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tSerialPortIO SerialPortVirt_GetIo(tSerialPortVirt *env) {
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tSerialPortIO io = {
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.env = env,
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.receive = (SerialPortIOTransaction) vSerialPortReceive,
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.transmit = (SerialPortIOTransaction) vSerialPortTransmit
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};
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return io;
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}
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