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| Rev | Author | Line No. | Line |
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| 3 | mjames | 1 | /* |
| 2 | * misc.c |
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| 3 | * |
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| 4 | * Created on: 21 Sep 2016 |
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| 5 | * Author: Mike |
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| 6 | */ |
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| 8 | mjames | 7 | #include "stm32l1xx_hal.h" |
| 3 | mjames | 8 | |
| 9 | void _init(void) |
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| 10 | { |
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| 11 | |||
| 12 | } |
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| 6 | mjames | 13 | |
| 14 | |||
| 8 | mjames | 15 | void TIM2_IRQHandler(void) |
| 16 | { |
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| 6 | mjames | 17 | |
| 8 | mjames | 18 | |
| 19 | |||
| 20 | } |
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| 21 | |||
| 22 | |||
| 23 | char blink = 0; |
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| 24 | // 100mS periodic sampler handler |
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| 25 | void TIM6_IRQHandler(void) |
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| 26 | { |
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| 27 | __HAL_TIM_CLEAR_FLAG(&htim6, TIM_FLAG_UPDATE) ; |
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| 28 | TimerFlag = 1; |
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| 29 | |||
| 30 | blink = !blink; |
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| 31 | HAL_GPIO_WritePin(LED_Blink_GPIO_Port, LED_Blink_Pin, blink ? GPIO_PIN_SET : GPIO_PIN_RESET); |
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| 32 | |||
| 33 | if (NoSerialInCTR < 5) { |
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| 34 | NoSerialInCTR++; |
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| 35 | if (NoSerialInCTR == 5) { |
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| 36 | NoSerialIn = 1; |
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| 37 | } |
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| 38 | } |
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| 39 | |||
| 40 | |||
| 41 | } |
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| 42 | |||
| 43 | |||
| 44 | |||
| 6 | mjames | 45 | #if OLD_ENGINEBAY |
| 46 | //----------------------------------------------------------- |
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| 47 | // This is the 10Hz timer |
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| 48 | |||
| 49 | void interrupt TimerISR1(void) { |
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| 50 | TimerFlag = 1; |
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| 51 | if (NoSerialInCTR < 5) { |
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| 52 | NoSerialInCTR++; |
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| 53 | if (NoSerialInCTR == 5) { |
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| 54 | NoSerialIn = 1; |
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| 55 | } |
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| 56 | } |
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| 57 | } |
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| 58 | //----------------------------------------------------------- |
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| 59 | |||
| 60 | |||
| 61 | volatile unsigned long RPM_Time[RPM_LIMIT]; |
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| 62 | volatile unsigned long RPM_Count; // incremented every reading |
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| 63 | |||
| 64 | void TimerISR0(void) { |
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| 65 | // check the listing |
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| 66 | asm volatile ("STMDB SP!, {r0-r4} "); |
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| 67 | // sort out the captures |
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| 68 | int stat = REG(TIMER0_IR); |
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| 69 | if (stat & (1 << 4)) //CR0 |
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| 70 | { |
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| 71 | RPM_Time[RPM_Count++] = REG(TIMER0_CR0); |
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| 72 | if (RPM_Count == RPM_LIMIT) { |
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| 73 | RPM_Count = 0; |
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| 74 | } |
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| 75 | } |
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| 76 | if (stat & (1 << 5)) //CR1 |
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| 77 | { |
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| 78 | // TDC_Time = REG(TIMER0_CR1); |
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| 79 | // TDC_Count++; |
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| 80 | } |
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| 81 | |||
| 82 | REG(TIMER0_IR) = stat; // clear the interrupts just handled. |
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| 83 | REG(VICVectAddr) = 0; // reset the VIC |
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| 84 | asm volatile ("LDMIA SP!, {r0-r4} "); |
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| 85 | asm volatile ("SUBS PC,lr,#4"); |
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| 86 | } |
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| 87 | |||
| 88 | //----------------------------------------------------------- |
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| 89 | // UART management |
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| 90 | // serial counter |
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| 91 | #define THRE (1<<6) |
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| 92 | #define RDR (1<<0) |
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| 93 | #define BUFFSIZ 256 |
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| 94 | |||
| 95 | volatile char txbuff[BUFFSIZ]; |
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| 96 | volatile int txptr = 0; |
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| 97 | volatile int txcnt = 0; |
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| 98 | |||
| 99 | volatile char rxbuff[BUFFSIZ]; |
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| 100 | volatile int rxptr = 0; |
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| 101 | volatile int rxcnt = 0; |
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| 102 | |||
| 103 | void Uart0ISR(void) __attribute__((naked)); |
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| 104 | void Uart0ISR(void) __attribute__((noinline)); |
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| 105 | void Uart0ISR(void) { |
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| 106 | asm volatile ("STMDB SP!, {r0-r3} "); |
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| 107 | int stat; |
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| 108 | while (!((stat = REG(UART0_IIR)) & 1)) { // LSbit is inactive |
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| 109 | switch (stat & 0x0E) { |
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| 110 | case 4: |
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| 111 | case 12: { |
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| 112 | char c = REG(UART0_RBR); |
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| 113 | |||
| 114 | NoSerialIn = NoSerialInCTR = 0; |
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| 115 | |||
| 116 | if (rxcnt < (BUFFSIZ - 1)) { |
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| 117 | rxbuff[(rxptr + rxcnt) % BUFFSIZ] = c; |
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| 118 | rxcnt++; |
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| 119 | } |
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| 120 | } |
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| 121 | break; |
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| 122 | case 2: { |
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| 123 | if (txcnt > 0) { |
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| 124 | REG(UART0_THR) = txbuff[txptr]; |
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| 125 | txcnt--; |
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| 126 | txptr++; |
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| 127 | txptr %= BUFFSIZ; |
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| 128 | } else { |
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| 129 | REG(UART0_IER) &= ~(1 << 1); // disable TX |
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| 130 | } |
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| 131 | } |
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| 132 | break; |
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| 133 | } |
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| 134 | } |
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| 135 | REG(VICVectAddr) = 0; // reset the VIC |
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| 136 | asm volatile ("LDMIA SP!, {r0-r3} "); |
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| 137 | asm volatile ("SUBS PC,lr,#4"); |
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| 138 | } |
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| 139 | |||
| 140 | int my_putchar(int c) { |
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| 141 | int rc = 0; |
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| 142 | { |
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| 143 | STI; |
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| 144 | if (!(REG(UART0_IER) & (1 << 1))) { |
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| 145 | REG(UART0_IER) |= (1 << 1); |
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| 146 | REG(UART0_THR) = c; |
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| 147 | rc=1; |
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| 148 | } else { |
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| 149 | |||
| 150 | if (txcnt < (BUFFSIZ - 1)) { |
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| 151 | txbuff[(txptr + txcnt) % BUFFSIZ] = c; |
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| 152 | txcnt++; |
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| 153 | rc = 1; |
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| 154 | } |
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| 155 | } |
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| 156 | CLI; |
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| 157 | } |
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| 158 | return rc; |
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| 159 | } |
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| 160 | |||
| 161 | int my_getchar(void) { |
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| 162 | |||
| 163 | int c = -1; |
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| 164 | STI; |
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| 165 | if (rxcnt) { |
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| 166 | c = rxbuff[rxptr]; |
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| 167 | rxcnt--; |
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| 168 | rxptr++; |
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| 169 | rxptr %= BUFFSIZ; |
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| 170 | } |
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| 171 | CLI; |
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| 172 | return c; |
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| 173 | } |
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| 174 | |||
| 175 | |||
| 176 | |||
| 177 | #endif |