Mplab C30 Compiler May 2026

// Interrupt-safe get inline int c30_cbuf_get(c30_cbuf_t *cb, unsigned char *data) if (cb->head == cb->tail) return -1; // empty

A for C30 would address its most common real-world pain points: poor RAM banking management , lack of built-in circular buffer support for DSP , and verbose ISR syntax . mplab c30 compiler

*data = cb->buffer[cb->tail]; cb->tail = (cb->tail + 1) & cb->mask; return 0; 32767 : ( (x) < -32768

// ------------------------------------------------------------ // 4. DSP FIXED-POINT UTILITY (C30 lacks saturating arithmetic) // ------------------------------------------------------------ #define Q15(x) ((int)((x) * 32768.0)) #define SATURATE_Q15(x) ( (x) > 32767 ? 32767 : ( (x) < -32768 ? -32768 : (x) ) ) 32767 : ( (x) &lt

// ------------------------------------------------------------ // 1. SAFE BANKING MACROS (avoid manual BANKED/FAR typos) // ------------------------------------------------------------ #define BANKED_NEAR ((near)) // Accessible without PSV #define BANKED_FAR attribute ((far)) // Any RAM, slower access #define Y_DATA_SPACE attribute ((space(ymemory))) // For DSP #define AUTO_PSV attribute ((space(auto_psv))) // const in program memory

void init_uart_buffer(void) c30_cbuf_init(&uart_rx, uart_rx_buf, 64);

int main() init_uart_buffer(); unsigned char ch; while (1) if (c30_cbuf_get(&uart_rx, &ch) == 0) // process byte