fix variable scope, multiple declerations error with gcc 10

inc/setup.h

@@ -18,7 +18,4 @@
 void setup(void);
 void setup_res(void);
 
-volatile uint32_t ADC_DMA_Buffer0[ADC_SAMPLES_IN_RT];  //240
-volatile uint32_t ADC_DMA_Buffer1[ADC_SAMPLES_IN_RT];
 
-RCC_ClocksTypeDef RCC_Clocks;

src/comps/adc.c

@@ -13,6 +13,9 @@
 
 #define TERM_NUM_WAVES 8
 
+extern volatile uint32_t ADC_DMA_Buffer0[ADC_SAMPLES_IN_RT];  //240
+extern volatile uint32_t ADC_DMA_Buffer1[ADC_SAMPLES_IN_RT];
+
 HAL_COMP(adc);
 
 HAL_PIN(sin0);   //sin output

src/comps/enc_fb.c

@@ -37,8 +37,8 @@ struct enc_fb_ctx_t {
   float absoffset;
 };
 
-int indexpos   = 0;
-int indexprint = 0;
+static int indexpos   = 0;
+static int indexprint = 0;
 
 static void nrt_init(void *ctx_ptr, hal_pin_inst_t *pin_ptr) {
   struct enc_fb_ctx_t *ctx      = (struct enc_fb_ctx_t *)ctx_ptr;

src/comps/encf.c

@@ -28,9 +28,9 @@ HAL_PIN(crc_er);
 HAL_PIN(freq);
 HAL_PIN(bit_ticks);
 
-volatile uint32_t sendf;
-uint32_t send_counterf;
-volatile uint16_t tim_data[160];
+static volatile uint32_t sendf;
+static uint32_t send_counterf;
+static volatile uint16_t tim_data[160];
 
 #pragma pack(push, 1)
 typedef struct {
@@ -90,14 +90,14 @@ data regardless of the index status. Note that the commutation track
 seems to be interpolated so is not better than maybe 1% accuracy
 */
 
-union {
+static union {
   uint8_t enc_data[10];
   fanuc_t fanuc;
 } data;
-uint8_t print_buf[10];
+static uint8_t print_buf[10];
 
-int32_t pos_offset;
-uint32_t state_counter;
+static int32_t pos_offset;
+static uint32_t state_counter;
 
 static void nrt_init(void *ctx_ptr, hal_pin_inst_t *pin_ptr) {
   // struct encf_ctx_t *ctx = (struct encf_ctx_t *)ctx_ptr;

src/comps/encs.c

@@ -35,8 +35,8 @@ HAL_PIN(pos);
 HAL_PIN(error);
 HAL_PIN(state);
 
-volatile uint32_t request_buf[24];
-volatile uint16_t tim_data[300];
+static volatile uint32_t request_buf[24];
+static volatile uint16_t tim_data[300];
 
 #pragma pack(push, 1)
 typedef union {

src/comps/smartabs.c

@@ -2,6 +2,7 @@
 #include "commands.h"
 #include "hal.h"
 #include "math.h"
+#include "crc.h"
 #include "defines.h"
 #include "angle.h"
 #include "stm32f4xx_conf.h"

src/comps/sserial.c

@@ -70,16 +70,16 @@ struct sserial_ctx_t {
   uint32_t phase;
 };
 
-volatile uint8_t rxbuf[128];  //rx dma buffer
-volatile uint8_t txbuf[128];  //tx dma buffer
-uint16_t address;             //current address pointer
-int rxpos;                    //read pointer for rx ringbuffer
-uint32_t timeout;
-lbp_t lbp;
-const char name[] = LBPCardName;
-unit_no_t unit;
-uint32_t max_waste_ticks;
-uint32_t block_bytes;
+static volatile uint8_t rxbuf[128];  //rx dma buffer
+static volatile uint8_t txbuf[128];  //tx dma buffer
+static uint16_t address;             //current address pointer
+static int rxpos;                    //read pointer for rx ringbuffer
+static uint32_t timeout;
+static lbp_t lbp;
+static const char name[] = LBPCardName;
+static unit_no_t unit;
+static uint32_t max_waste_ticks;
+static uint32_t block_bytes;
 
 #pragma pack(push, 1)
 //*****************************************************************************

src/comps/yaskawa.c

@@ -34,15 +34,15 @@ HAL_PIN(crc_ok);
 HAL_PIN(crc_error);
 
 //TODO: use context
-volatile uint32_t txbuf[128];
-int pos;
-int dfdf;
-volatile char m_data[150];
-volatile char m_data2[150];
-volatile uint16_t tim_data[300];
-DMA_InitTypeDef DMA_InitStructuretx;
-DMA_InitTypeDef DMA_InitStructurerx;
-uint8_t yaskawa_reply[14];
+static volatile uint32_t txbuf[128];
+static int pos;
+static int dfdf;
+static volatile char m_data[150];
+static volatile char m_data2[150];
+static volatile uint16_t tim_data[300];
+static DMA_InitTypeDef DMA_InitStructuretx;
+static DMA_InitTypeDef DMA_InitStructurerx;
+static uint8_t yaskawa_reply[14];
 //uint8_t yaskara_reply_len;
 
 static void nrt_init(void *ctx_ptr, hal_pin_inst_t *pin_ptr) {

src/main.c

@@ -28,6 +28,8 @@
 #include "main.h"
 #include "commands.h"
 
+extern RCC_ClocksTypeDef RCC_Clocks;
+
 uint32_t hal_get_systick_value() {
   return (SysTick->VAL);
 }

src/setup.c

@@ -10,6 +10,10 @@
 #include "usbd_cdc_if.h"
 #include "defines.h"
 
+RCC_ClocksTypeDef RCC_Clocks;
+volatile uint32_t ADC_DMA_Buffer0[ADC_SAMPLES_IN_RT];  //240
+volatile uint32_t ADC_DMA_Buffer1[ADC_SAMPLES_IN_RT];
+
 void setup() {
   //Enable clocks
   //TODO: small f4 does not have GPIOE