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Remove doubling of buffer size in realiseEndpoint() 

realiseEndpoint() was unnecessarily allocating twice the buffer space for each endpoint buffer.  This was presumably for the sake of the hardware SIE's double-buffering (EVEN/ODD) system, but that's vestigial - this implementation doesn't use the double-buffering capability at all, leaving the ODDRST bit in the CTL register always set.  The double-size allocation is a pure waste of memory.
pull/1482/head
mjrgh 2015-12-24 18:17:58 -08:00
parent 928b206625
commit 966bf9577a
1 changed files with 4 additions and 4 deletions
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8
libraries/USBDevice/USBDevice/USBHAL_KL25Z.cpp
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@ -214,21 +214,21 @@ bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flag
handshake_flag = USB_ENDPT_EPHSHK_MASK;
if (IN_EP(endpoint)) {
if (endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)] == NULL)
endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)] = (uint8_t *) malloc (64*2);
endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)] = (uint8_t *) malloc (64);
buf = &endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)][0];
} else {
if (endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)] == NULL)
endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)] = (uint8_t *) malloc (64*2);
endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)] = (uint8_t *) malloc (64);
buf = &endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)][0];
}
} else {
if (IN_EP(endpoint)) {
if (endpoint_buffer_iso[2] == NULL)
endpoint_buffer_iso[2] = (uint8_t *) malloc (1023*2);
endpoint_buffer_iso[2] = (uint8_t *) malloc (1023);
buf = &endpoint_buffer_iso[2][0];
} else {
if (endpoint_buffer_iso[0] == NULL)
endpoint_buffer_iso[0] = (uint8_t *) malloc (1023*2);
endpoint_buffer_iso[0] = (uint8_t *) malloc (1023);
buf = &endpoint_buffer_iso[0][0];
}
}